Month preview | Bob Moler's Ephemeris Blog

07/01/2019 – Ephemeris – Previewing July skies

July 1, 2019 bobmoler Comments off

Ephemeris for Monday, July 1st. Today the Sun will be up for 15 hours and 31 minutes, setting at 9:32, and it will rise tomorrow at 6:01. The Moon, 1 day before new, will rise at 5:49 tomorrow morning.

Lets preview July’s skies. The Sun, having reached its northern solstice, is beginning to slide southward again, at first imperceptibly, then with greater speed. The daylight hours will decrease from 15 hours and 31 minutes today to 14 hours 42 minutes at month’s end. The daylight hours will be slightly shorter south of Interlochen, and slightly longer to the north. The altitude of the Sun at local noon, when it is due south will decrease from 68 degrees now to 63 degrees at month’s end. The Sun will be a degree lower in the Straits area. Despite the warmth, the Earth will reach its greatest distance from the Sun this Friday the 5th. On that day the Earth will reach 94.5 million miles (152.1 million km) from the Sun.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

July Evening Star Chart

Star Chart for July 2019 (11 p.m. EDT July 15, 2019). Created using my LookingUp program. Click on image to enlarge.

The planets and stars are plotted for the 15th at 11 p.m. EDT in the evening and 4:30 a.m. for the morning chart. These are the chart times. Note that Traverse City is located approximately 45 minutes behind our time meridian, West 75° longitude. (An hour 45 minutes behind our daylight saving time meridian during EDT). To duplicate the star positions on a planisphere you may have to set it to 1 hour 45 minutes earlier than the current time.

Note the chart times are for the 15th. For each week before the 15th add ½ hour (28 minutes if you’re picky). For each week after the 15th subtract ½ hour. The planet positions are updated each Wednesday on this blog. For planet positions on dates other than the 15th.

July Morning Star Chart

Star Chart for July mornings 2019 (4:30 a.m. EDT July 15, 2019). Created using my LookingUp program. Click on image to enlarge.

For a list of constellation names to go with the abbreviations click here.

Pointer stars at the front of the bowl of the Big Dipper point to Polaris the North Star.
Leaky dipper drips on Leo.
Follow the arc of the handle of the Big Dipper to the star Arcturus, and
Extend like a spike to Spica.
The Summer Triangle is in red.
DAqR is the radiant of the South Delta Aquariid meteor shower (Peaks on the 30th)

Twilight Limits, Nautical and Astronomical

			EDT
Traverse City	Morning twilight		Evening twilight		Dark night		Moon
Date	Astro.	Nautical	Nautical	Astro.	Start	End	Illum.
2019-07-01	3h37m	4h40m	23h00m	0h03m	0h03m	3h37m	0.02
2019-07-02	3h38m	4h41m	23h00m	0h02m	0h02m	3h38m	0
2019-07-03	3h40m	4h42m	22h59m	0h02m	0h02m	3h40m	0.01
2019-07-04	3h41m	4h43m	22h59m	0h01m	0h01m	3h41m	0.06
2019-07-05	3h42m	4h44m	22h58m	0h00m	0h00m	3h42m	0.13
2019-07-06	3h43m	4h45m	22h58m	23h59m	–	3h43m	0.22
2019-07-07	3h45m	4h46m	22h57m	23h58m	0h34m	3h45m	0.33
2019-07-08	3h46m	4h47m	22h56m	23h57m	1h03m	3h46m	0.45
2019-07-09	3h48m	4h48m	22h56m	23h55m	1h31m	3h48m	0.56
2019-07-10	3h49m	4h49m	22h55m	23h54m	1h58m	3h49m	0.67
2019-07-11	3h51m	4h50m	22h54m	23h53m	2h26m	3h51m	0.77
2019-07-12	3h52m	4h51m	22h53m	23h52m	2h57m	3h52m	0.86
2019-07-13	3h54m	4h52m	22h52m	23h50m	3h32m	3h54m	0.92
2019-07-14	3h56m	4h53m	22h51m	23h49m	–	–	0.92
2019-07-15	3h58m	4h54m	22h50m	23h47m	–	–	0.97
2019-07-16	3h59m	4h56m	22h49m	23h46m	–	–	1
2019-07-17	4h01m	4h57m	22h48m	23h44m	–	–	1
2019-07-18	4h03m	4h58m	22h47m	23h42m	–	–	0.98
2019-07-19	4h05m	5h00m	22h46m	23h41m	–	–	0.95
2019-07-20	4h07m	5h01m	22h44m	23h39m	23h39m	23h40m	0.89
2019-07-21	4h08m	5h02m	22h43m	23h37m	23h37m	–	0.83
2019-07-22	4h10m	5h04m	22h42m	23h35m	23h35m	0h04m	0.75
2019-07-23	4h12m	5h05m	22h41m	23h33m	23h33m	0h27m	0.66
2019-07-24	4h14m	5h06m	22h39m	23h32m	23h32m	0h50m	0.56
2019-07-25	4h16m	5h08m	22h38m	23h30m	23h30m	1h14m	0.46
2019-07-26	4h18m	5h09m	22h36m	23h28m	23h28m	1h40m	0.36
2019-07-27	4h20m	5h11m	22h35m	23h26m	23h26m	2h11m	0.26
2019-07-28	4h22m	5h12m	22h33m	23h24m	23h24m	2h48m	0.16
2019-07-29	4h24m	5h14m	22h32m	23h22m	23h22m	3h34m	0.09
2019-07-30	4h26m	5h15m	22h30m	23h20m	23h20m	4h26m	0.03
2019-07-31	4h28m	5h17m	22h29m	23h18m	23h18m	4h28m	0

Twilight calendar was generated using Cartes du Ciel (Sky Charts).

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2018/09/27/.

NASA Calendar of Planetary Events

Jul	1	Mo		        Venus: 12° W
 	2	Tu	 3:16 pm	New Moon
 	2	Tu	 3:23 pm	Total Solar Eclipse
                                        S Pacific, Chile, Argentina
 	2	Tu	 6:02 pm	Moon North Dec.: 22.4° N
 	3	We	 2:53 am	Moon Ascending Node
 	4	Th	 4:34 am	Moon-Mercury: 3.3° S
 	4	Th	 8:53 am	Mercury-Beehive: 4.6° S
 	4	Th	11:02 am	Moon-Beehive: 0.2° S
 	4	Th	 2:59 pm	Aphelion: 1.0168 AU
 	5	Fr	12:54 am	Moon Perigee: 363700 km
 	5	Fr	 7:18 pm	Mercury-Mars: 3.8° N
 	9	Tu	 6:55 am	First Quarter
 	9	Tu	12:12 pm	Saturn Opposition
 	13	Sa	 3:06 am	Mars-Beehive: 0.4° S
 	13	Sa	 3:43 pm	Moon-Jupiter: 2.5° S
 	15	Mo	 6:49 pm	Moon South Dec.: 22.4° S
 	16	Tu	 3:27 am	Moon-Saturn: 0.2° N
 	16	Tu	 5:05 am	Moon Descending Node
 	16	Tu	 5:31 pm	Partial Lunar Eclipse
                                        S America, most of E Hemisphere
 	16	Tu	 5:38 pm	Full Moon
 	20	Sa	 8:01 pm	Moon Apogee: 405500 km
 	21	Su	 8:32 am	Mercury Inferior Conj.
 	24	We	 9:18 pm	Last Quarter
 	27	Sa	 8:47 pm	Moon-Aldebaran: 2.4° S
 	28	Su	10:59 am	Delta Aquarid Shower: ZHR = 20
                                        Intl. Meteor Org. has the peak on the 30th.
 	30	Tu	 4:10 am	Moon North Dec.: 22.4° N
 	30	Tu	 1:02 pm	Moon Ascending Node
 	31	We	11:12 pm	New Moon
Aug	1	Th		        Venus: 3.6° W

All event times are given for UTC-4 hr: Eastern Daylight Saving Time.

Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html.

If you go to the above site you can print out a list like the above for the entire year or calendar pages for your time zone.

Sun and Moon Rising and Setting Events

     LU                  Ephemeris of Sky Events for Interlochen/TC
     July, 2019    Local time zone: EDT
     +-----------------------------------------------------------------------+
     | DATE |  SUN     SUN  DAYLIGHT|   TWILIGHT*    |MOON  RISE OR    ILLUM |
     |      |  RISE    SET    HOURS |  END    START  |PHASE SET** TIME FRACTN|
     +=======================================================================+
     |Mon  1| 06:00a  09:32p  15:31 | 10:57p  04:35a |      Rise 05:49a    1%|
     |Tue  2| 06:01a  09:31p  15:30 | 10:57p  04:36a |New   Set  09:37p    0%|
     |Wed  3| 06:02a  09:31p  15:29 | 10:56p  04:36a |      Set  10:33p    2%|
     |Thu  4| 06:02a  09:31p  15:28 | 10:56p  04:37a |      Set  11:20p    7%|
     |Fri  5| 06:03a  09:31p  15:27 | 10:55p  04:38a |      Set  11:59p   14%|
     |Sat  6| 06:04a  09:30p  15:26 | 10:55p  04:39a |      Set  12:33a   23%|
     +------+-----------------------+----------------+-----------------------+
     |Sun  7| 06:04a  09:30p  15:25 | 10:54p  04:40a |      Set  01:03a   34%|
     |Mon  8| 06:05a  09:29p  15:24 | 10:53p  04:41a |      Set  01:31a   45%|
     |Tue  9| 06:06a  09:29p  15:23 | 10:52p  04:42a |F Qtr Set  01:58a   56%|
     |Wed 10| 06:07a  09:28p  15:21 | 10:52p  04:43a |      Set  02:26a   67%|
     |Thu 11| 06:07a  09:28p  15:20 | 10:51p  04:44a |      Set  02:57a   77%|
     |Fri 12| 06:08a  09:27p  15:19 | 10:50p  04:45a |      Set  03:32a   85%|
     |Sat 13| 06:09a  09:27p  15:17 | 10:49p  04:46a |      Set  04:11a   92%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 14| 06:10a  09:26p  15:16 | 10:48p  04:48a |      Set  04:57a   96%|
     |Mon 15| 06:11a  09:25p  15:14 | 10:47p  04:49a |      Set  05:48a   99%|
     |Tue 16| 06:12a  09:25p  15:12 | 10:46p  04:50a |Full  Rise 09:30p  100%|
     |Wed 17| 06:13a  09:24p  15:11 | 10:45p  04:51a |      Rise 10:10p   99%|
     |Thu 18| 06:14a  09:23p  15:09 | 10:44p  04:53a |      Rise 10:45p   96%|
     |Fri 19| 06:15a  09:22p  15:07 | 10:42p  04:54a |      Rise 11:14p   91%|
     |Sat 20| 06:16a  09:21p  15:05 | 10:41p  04:55a |      Rise 11:40p   85%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 21| 06:17a  09:20p  15:03 | 10:40p  04:57a |      Rise 12:04a   78%|
     |Mon 22| 06:18a  09:19p  15:01 | 10:39p  04:58a |      Rise 12:27a   69%|
     |Tue 23| 06:19a  09:18p  14:59 | 10:37p  04:59a |      Rise 12:50a   60%|
     |Wed 24| 06:20a  09:17p  14:57 | 10:36p  05:01a |L Qtr Rise 01:14a   51%|
     |Thu 25| 06:21a  09:16p  14:55 | 10:34p  05:02a |      Rise 01:40a   41%|
     |Fri 26| 06:22a  09:15p  14:53 | 10:33p  05:04a |      Rise 02:11a   31%|
     |Sat 27| 06:23a  09:14p  14:51 | 10:32p  05:05a |      Rise 02:48a   21%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 28| 06:24a  09:13p  14:49 | 10:30p  05:07a |      Rise 03:34a   13%|
     |Mon 29| 06:25a  09:12p  14:47 | 10:29p  05:08a |      Rise 04:30a    6%|
     |Tue 30| 06:26a  09:11p  14:44 | 10:27p  05:09a |      Rise 05:37a    2%|
     |Wed 31| 06:27a  09:10p  14:42 | 10:25p  05:11a |New   Set  09:10p    0%|
     +-----------------------------------------------------------------------+
     * Nautical Twilight
     ** Moonrise or moonset, whichever occurs between sunrise and sunset

Categories: Ephemeris Program, Month preview Tags: July 2019

05/31/2019 – Ephemeris – Previewing June skies

May 31, 2019 bobmoler Comments off

Ephemeris for Friday, May 31st. Today the Sun will be up for 15 hours and 19 minutes, setting at 9:20, and it will rise tomorrow at 6:00. The Moon, 3 days before new, will rise at 5:13 tomorrow morning.

Let’s preview the skies of June. There’ will be a lot of Sun in June and very little night. The daylight hours will increase a bit from 15 hours and 20 minutes tomorrow to 15 hours and 34 minutes on the 21st, retreating back to 15 hours 31 minutes at month’s end. At this time of the year the sunset times for Ludington, Interlochen, Petoskey and Mackinaw City are very nearly the same. However the sunrise times are at their most divergent. With Ludington’s sunrise being 14 minutes later than Mackinaw City’s. The altitude of the sun above the southern horizon at local noon around 1:43 p.m. will hover around 68 to 69 degrees. Summer will start on the 21st at 11:54 a.m. The planet Mercury will grace our evening skies this month.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

June Evening Star Chart

Star Chart for June 2019 (11 p.m. EDT June 15, 2019). Created using my LookingUp program. Click on image to enlarge.

The planets and stars are plotted for the 15th at 11 p.m. EDT in the evening and 4 a.m. for the morning chart. These are the chart times. Note that Traverse City is located approximately 45 minutes behind our time meridian, West 75° longitude. (An hour 45 minutes behind our daylight saving time meridian during EDT). To duplicate the star positions on a planisphere you may have to set it to 1 hour 45 minutes earlier than the current time.

Note the chart times of 10 p.m. and 5 a.m. are for the 15th. For each week before the 15th add ½ hour (28 minutes if you’re picky). For each week after the 15th subtract ½ hour. The planet positions are updated each Wednesday on this blog. For planet positions on dates other than the 15th, check the Wednesday planet posts on this blog.

June Morning Star Chart

Star Chart for June mornings 2019 (4 a.m. EDT June 15, 2019). Created using my LookingUp program. Click on image to enlarge.

For a list of constellation names to go with the abbreviations click here.

Pointer stars at the front of the bowl of the Big Dipper point to Polaris the North Star.
Leaky dipper drips on Leo.
Follow the arc of the handle of the Big Dipper to the star Arcturus, and
Extend like a spike to Spica.
The Summer Triangle is in red.

Twilight Limits, Nautical and Astronomical

			EDT
Traverse City	Morning twilight		Evening twilight		Dark night		Moon
Date	Astro.	Nautical	Nautical	Astro.	Start	End	Illum.
2019-06-01	3h43m	4h42m	22h46m	23h45m	23h45m	3h43m	0.04
2019-06-02	3h42m	4h41m	22h47m	23h47m	23h47m	3h42m	0.01
2019-06-03	3h41m	4h40m	22h49m	23h48m	23h48m	3h41m	0
2019-06-04	3h39m	4h40m	22h50m	23h50m	23h50m	3h39m	0.02
2019-06-05	3h38m	4h39m	22h51m	23h51m	23h51m	3h38m	0.07
2019-06-06	3h37m	4h38m	22h52m	23h53m	–	3h37m	0.15
2019-06-07	3h36m	4h38m	22h53m	23h54m	0h41m	3h36m	0.24
2019-06-08	3h35m	4h37m	22h53m	23h55m	1h23m	3h35m	0.35
2019-06-09	3h34m	4h37m	22h54m	23h57m	1h59m	3h34m	0.47
2019-06-10	3h34m	4h36m	22h55m	23h58m	2h31m	3h34m	0.59
2019-06-11	3h33m	4h36m	22h56m	23h59m	2h59m	3h33m	0.7
2019-06-12	3h32m	4h36m	22h57m	0h00m	3h26m	3h32m	0.8
2019-06-13	3h32m	4h36m	22h57m	0h01m	–	–	0.88
2019-06-14	3h32m	4h35m	22h58m	0h02m	–	–	0.95
2019-06-15	3h31m	4h35m	22h58m	0h02m	–	–	0.95
2019-06-16	3h31m	4h35m	22h59m	0h03m	–	–	0.98
2019-06-17	3h31m	4h35m	22h59m	0h04m	–	–	1
2019-06-18	3h31m	4h35m	23h00m	0h04m	–	–	0.99
2019-06-19	3h31m	4h35m	23h00m	0h05m	–	–	0.96
2019-06-20	3h31m	4h35m	23h00m	0h05m	–	–	0.91
2019-06-21	3h31m	4h36m	23h01m	0h05m	0h05m	0h12m	0.85
2019-06-22	3h31m	4h36m	23h01m	0h05m	0h05m	0h44m	0.77
2019-06-23	3h32m	4h36m	23h01m	0h06m	0h06m	1h12m	0.68
2019-06-24	3h32m	4h36m	23h01m	0h06m	0h06m	1h37m	0.59
2019-06-25	3h32m	4h37m	23h01m	0h05m	0h05m	2h01m	0.49
2019-06-26	3h33m	4h37m	23h01m	0h05m	0h05m	2h23m	0.39
2019-06-27	3h34m	4h38m	23h01m	0h05m	0h05m	2h47m	0.3
2019-06-28	3h35m	4h38m	23h01m	0h05m	0h05m	3h13m	0.21
2019-06-29	3h35m	4h39m	23h01m	0h04m	0h04m	3h35m	0.12
2019-06-30	3h36m	4h40m	23h00m	0h04m	0h04m	3h36m	0.06

Twilight calendar was generated using Cartes du Ciel (Sky Charts).

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2018/09/27/.

NASA Calendar of Planetary Events

Date       Time    Event
Jun  1 Sa          Venus: 20° W
     1 Sa  2:15 pm Moon-Venus: 3.4° N
     3 Mo  6:02 am New Moon
     5 We  8:58 am Moon North Dec.: 22.4° N
     5 We 11:05 am Moon-Mars: 1.6° N
     5 We  6:46 pm Moon Ascending Node
     7 Fr  3:19 am Moon-Beehive: 0.2° S
     7 Fr  7:21 pm Moon Perigee: 368500 km
     8 Sa  9:54 pm Venus-Pleiades: 5.1° S
    10 Mo  1:59 am First Quarter
    10 Mo 11:11 am Jupiter Opposition
    16 Su  2:50 pm Moon-Jupiter: 2.1° S
    16 Su  7:09 pm Venus-Aldebaran: 4.7° N
    17 Mo  4:31 am Full Moon
    18 Tu 11:33 am Moon South Dec.: 22.4° S
    18 Tu  1:41 pm Mercury-Mars: 0.2° N
    18 Tu  9:49 pm Moon Descending Node
    18 Tu 11:58 pm Moon-Saturn: 0.5° N
    19 We  9:06 am Mercury-Pollux: 5.4° S
    21 Fr  3:56 am Mars-Pollux: 5.5° S
    21 Fr 11:54 am Summer Solstice
    23 Su  3:50 am Moon Apogee: 404500 km
    23 Su  6:59 pm Mercury Greatest Elongation: 25.2° E
    25 Tu  5:46 am Last Quarter
    30 Su 11:06 am Moon-Aldebaran: 2.3° S
Jul  1 Mo          Venus: 12° W

All event times are given for UTC-4 hr: Eastern Daylight Saving Time.

Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html.

If you go to the above site you can print out a list like the above for the entire year or calendar pages for your time zone.

Sun and Moon Rising and Setting Events

     LU                  Ephemeris of Sky Events for Interlochen/TC
     June, 2019    Local time zone: EDT
     +-----------------------------------------------------------------------+
     | DATE |  SUN     SUN  DAYLIGHT|   TWILIGHT*    |MOON  RISE OR    ILLUM |
     |      |  RISE    SET    HOURS |  END    START  |PHASE SET** TIME FRACTN|
     +=======================================================================+
     |Sat  1| 06:00a  09:21p  15:20 | 10:44p  04:37a |      Rise 05:45a    3%|
     +------+-----------------------+----------------+-----------------------+
     |Sun  2| 05:59a  09:22p  15:22 | 10:45p  04:36a |      Rise 06:22a    0%|
     |Mon  3| 05:59a  09:22p  15:23 | 10:46p  04:35a |New   Set  09:45p    0%|
     |Tue  4| 05:59a  09:23p  15:24 | 10:47p  04:35a |      Set  10:51p    3%|
     |Wed  5| 05:58a  09:24p  15:25 | 10:48p  04:34a |      Set  11:49p    8%|
     |Thu  6| 05:58a  09:25p  15:26 | 10:49p  04:33a |      Set  12:40a   16%|
     |Fri  7| 05:57a  09:25p  15:27 | 10:50p  04:33a |      Set  01:23a   25%|
     |Sat  8| 05:57a  09:26p  15:28 | 10:51p  04:32a |      Set  01:59a   36%|
     +------+-----------------------+----------------+-----------------------+
     |Sun  9| 05:57a  09:27p  15:29 | 10:52p  04:32a |      Set  02:30a   47%|
     |Mon 10| 05:57a  09:27p  15:30 | 10:53p  04:31a |F Qtr Set  02:59a   59%|
     |Tue 11| 05:56a  09:28p  15:31 | 10:53p  04:31a |      Set  03:26a   69%|
     |Wed 12| 05:56a  09:28p  15:31 | 10:54p  04:31a |      Set  03:53a   79%|
     |Thu 13| 05:56a  09:29p  15:32 | 10:55p  04:30a |      Set  04:23a   87%|
     |Fri 14| 05:56a  09:29p  15:33 | 10:55p  04:30a |      Set  04:55a   94%|
     |Sat 15| 05:56a  09:30p  15:33 | 10:56p  04:30a |      Set  05:32a   98%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 16| 05:56a  09:30p  15:33 | 10:56p  04:30a |      Set  06:14a  100%|
     |Mon 17| 05:56a  09:30p  15:34 | 10:57p  04:30a |Full  Rise 09:56p  100%|
     |Tue 18| 05:56a  09:31p  15:34 | 10:57p  04:30a |      Rise 10:49p   97%|
     |Wed 19| 05:56a  09:31p  15:34 | 10:57p  04:30a |      Rise 11:34p   93%|
     |Thu 20| 05:56a  09:31p  15:34 | 10:58p  04:30a |      Rise 12:12a   87%|
     |Fri 21| 05:57a  09:32p  15:34 | 10:58p  04:30a |      Rise 12:44a   80%|
     |Sat 22| 05:57a  09:32p  15:34 | 10:58p  04:31a |      Rise 01:12a   72%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 23| 05:57a  09:32p  15:34 | 10:58p  04:31a |      Rise 01:37a   63%|
     |Mon 24| 05:57a  09:32p  15:34 | 10:58p  04:31a |      Rise 02:00a   54%|
     |Tue 25| 05:58a  09:32p  15:34 | 10:58p  04:32a |L Qtr Rise 02:23a   44%|
     |Wed 26| 05:58a  09:32p  15:33 | 10:58p  04:32a |      Rise 02:47a   35%|
     |Thu 27| 05:59a  09:32p  15:33 | 10:58p  04:32a |      Rise 03:13a   26%|
     |Fri 28| 05:59a  09:32p  15:33 | 10:58p  04:33a |      Rise 03:42a   17%|
     |Sat 29| 05:59a  09:32p  15:32 | 10:58p  04:34a |      Rise 04:16a   10%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 30| 06:00a  09:32p  15:31 | 10:57p  04:34a |      Rise 04:58a    4%|
     +-----------------------------------------------------------------------+
     * Nautical Twilight
     ** Moonrise or moonset, whichever occurs between sunrise and sunset

Categories: Ephemeris Program, Month preview

04/30/2019 – Ephemeris – Previewing May skies

April 30, 2019 bobmoler Comments off

Ephemeris for Tuesday, April 30th. Today the Sun will be up for 14 hours and 11 minutes, setting at 8:46, and it will rise tomorrow at 6:33. The Moon, half way from last quarter to new, will rise at 5:30 tomorrow morning.

Let’s look ahead at the month of May, the month when the promise of spring is finally fulfilled. Daylight hours in the Interlochen/Traverse City area will increase from 14 hours and 14 minutes Tomorrow to 15 hours 19 minutes on the 31st. The altitude, or angle, of the sun above the southern horizon at local noon will ascend from 60 degrees tomorrow to 67 degrees at month’s end. The altitude of the sun in the Straits area will be a degree lower than that. Local apparent noon this month, when the sun passes due south, will be about 1:38 p.m. Early this month we’ll have The Eta Aquariid meteor shower early in the morning. Mars is our only evening planet, falling way behind the Earth 217 million miles (349 million km) away at mid-month.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

May Evening Star Chart

Star Chart for May 2019 (11 p.m. EDT May 15, 2019). Created using my LookingUp program. Click on image to enlarge.

The planets and stars are plotted for the 15th at 11 p.m. EDT in the evening and 5 a.m. for the morning chart. These are the chart times. Note that Traverse City is located approximately 45 minutes behind our time meridian, West 75° longitude. (An hour 45 minutes behind our daylight saving time meridian during EDT). To duplicate the star positions on a planisphere you may have to set it to 1 hour 45 minutes earlier than the current time.

May Morning Star Chart

Star Chart for May mornings 2019 (5 a.m. EDT May 15, 2019). Created using my LookingUp program. Click on image to enlarge.

For a list of constellation names to go with the abbreviations click here.

Pointer stars at the front of the bowl of the Big Dipper point to Polaris the North Star.
Leaky dipper drips on Leo
Follow the arc of the handle of the Big Dipper to the star Arcturus, and
Extend like a spike to Spica,
The Summer Triangle is in red.
EaqR is the radiant of the Aquariid meteor shower that peaks on the 5th-6th. See Ephemeris Extra Saturday the 4th.

Twilight Limits, Nautical and Astronomical

			EDT
Traverse City	Morning twilight		Evening twilight		Dark night		Moon
Date	Astro.	Nautical	Nautical	Astro.	Start	End	Illum.
2019-05-01	4h41m	5h25m	22h02m	22h46m	22h46m	4h41m	0.11
2019-05-02	4h39m	5h24m	22h03m	22h48m	22h48m	4h39m	0.05
2019-05-03	4h37m	5h22m	22h05m	22h50m	22h50m	4h37m	0.02
2019-05-04	4h34m	5h20m	22h06m	22h52m	22h52m	4h34m	0
2019-05-05	4h32m	5h18m	22h08m	22h54m	22h54m	4h32m	0.01
2019-05-06	4h30m	5h17m	22h09m	22h56m	22h56m	4h30m	0.04
2019-05-07	4h28m	5h15m	22h11m	22h58m	23h58m	4h28m	0.09
2019-05-08	4h26m	5h13m	22h13m	23h00m	–	4h26m	0.17
2019-05-09	4h24m	5h12m	22h14m	23h02m	1h00m	4h24m	0.27
2019-05-10	4h22m	5h10m	22h16m	23h04m	1h54m	4h22m	0.38
2019-05-11	4h20m	5h08m	22h17m	23h06m	2h41m	4h20m	0.5
2019-05-12	4h18m	5h07m	22h19m	23h08m	3h21m	4h18m	0.61
2019-05-13	4h16m	5h05m	22h20m	23h10m	3h55m	4h16m	0.73
2019-05-14	4h14m	5h04m	22h22m	23h12m	–	–	0.83
2019-05-15	4h12m	5h02m	22h23m	23h14m	–	–	0.91
2019-05-16	4h10m	5h01m	22h25m	23h16m	–	–	0.91
2019-05-17	4h08m	4h59m	22h26m	23h18m	–	–	0.96
2019-05-18	4h06m	4h58m	22h28m	23h20m	–	–	0.99
2019-05-19	4h04m	4h56m	22h29m	23h22m	–	–	1
2019-05-20	4h02m	4h55m	22h31m	23h23m	–	–	0.98
2019-05-21	4h00m	4h54m	22h32m	23h25m	23h25m	–	0.93
2019-05-22	3h59m	4h53m	22h33m	23h27m	23h27m	0h07m	0.87
2019-05-23	3h57m	4h51m	22h35m	23h29m	23h29m	0h56m	0.8
2019-05-24	3h55m	4h50m	22h36m	23h31m	23h31m	1h38m	0.71
2019-05-25	3h54m	4h49m	22h38m	23h33m	23h33m	2h13m	0.62
2019-05-26	3h52m	4h48m	22h39m	23h35m	23h35m	2h43m	0.52
2019-05-27	3h50m	4h47m	22h40m	23h37m	23h37m	3h10m	0.42
2019-05-28	3h49m	4h46m	22h42m	23h38m	23h38m	3h34m	0.33
2019-05-29	3h47m	4h45m	22h43m	23h40m	23h40m	3h47m	0.24
2019-05-30	3h46m	4h44m	22h44m	23h42m	23h42m	3h46m	0.16
2019-05-31	3h44m	4h43m	22h45m	23h44m	23h44m	3h44m	0.09

Twilight calendar was generated using Cartes du Ciel (Sky Charts).

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2018/09/27/.

NASA Calendar of Planetary Events

May  1 We          Venus: 27.8° W
     2 Th  7:39 am Moon-Venus: 3.9° N
     4 Sa  6:45 pm New Moon
     5 Su  9:12 am Eta Aquariid Meteor Shower: ZHR = 60
     6 Mo  5:52 pm Moon-Aldebaran: 2.4° S
     7 Tu  7:36 pm Moon-Mars: 3.3° N
     9 Th  1:46 am Moon North Dec.: 22.2° N
     9 Th  2:50 pm Moon Ascending Node
    10 Fr  9:35 pm Moon-Beehive: 0°
    11 Sa  9:12 pm First Quarter
    13 Mo  5:53 pm Moon Perigee: 369000 km
    18 Sa  5:11 pm Full Moon
    20 Mo 12:54 pm Moon-Jupiter: 1.8° S
    21 Tu  8:59 am Mercury Superior Conj.
    22 We  2:41 am Moon South Dec.: 22.3° S
    22 We  3:12 pm Moon Descending Node
    22 We  6:25 pm Moon-Saturn: 0.6° N
    26 Su  9:27 am Moon Apogee: 404100 km
    26 Su 12:33 pm Last Quarter
Jun  1 Sa          Venus: 20° W

All event times are given for UTC-5 hr: Eastern Standard or UTC-4 hr: Daylight Saving Time starting May 10th.

Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html.

If you go to the above site you can print out a list like the above for the entire year or calendar pages for your time zone.

Sun and Moon Rising and Setting Events

     LU                  Ephemeris of Sky Events for Interlochen/TC
     May, 2019    Local time zone: EDT
     +-----------------------------------------------------------------------+
     | DATE |  SUN     SUN  DAYLIGHT|   TWILIGHT*    |MOON  RISE OR    ILLUM |
     |      |  RISE    SET    HOURS |  END    START  |PHASE SET** TIME FRACTN|
     +=======================================================================+
     |Wed  1| 06:33a  08:47p  14:14 | 09:59p  05:21a |      Rise 05:54a    9%|
     |Thu  2| 06:31a  08:48p  14:17 | 10:01p  05:19a |      Rise 06:18a    4%|
     |Fri  3| 06:30a  08:49p  14:19 | 10:02p  05:17a |      Rise 06:44a    1%|
     |Sat  4| 06:28a  08:51p  14:22 | 10:04p  05:15a |New   Set  08:36p    0%|
     +------+-----------------------+----------------+-----------------------+
     |Sun  5| 06:27a  08:52p  14:24 | 10:06p  05:14a |      Set  09:44p    1%|
     |Mon  6| 06:26a  08:53p  14:27 | 10:07p  05:12a |      Set  10:52p    5%|
     |Tue  7| 06:24a  08:54p  14:30 | 10:09p  05:10a |      Set  11:58p   10%|
     |Wed  8| 06:23a  08:55p  14:32 | 10:10p  05:09a |      Set  12:59a   18%|
     |Thu  9| 06:22a  08:57p  14:35 | 10:12p  05:07a |      Set  01:54a   28%|
     |Fri 10| 06:20a  08:58p  14:37 | 10:13p  05:05a |      Set  02:41a   38%|
     |Sat 11| 06:19a  08:59p  14:39 | 10:15p  05:04a |F Qtr Set  03:21a   49%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 12| 06:18a  09:00p  14:42 | 10:16p  05:02a |      Set  03:55a   61%|
     |Mon 13| 06:17a  09:01p  14:44 | 10:18p  05:00a |      Set  04:26a   72%|
     |Tue 14| 06:15a  09:03p  14:47 | 10:19p  04:59a |      Set  04:54a   81%|
     |Wed 15| 06:14a  09:04p  14:49 | 10:21p  04:57a |      Set  05:22a   89%|
     |Thu 16| 06:13a  09:05p  14:51 | 10:22p  04:56a |      Set  05:51a   95%|
     |Fri 17| 06:12a  09:06p  14:53 | 10:24p  04:55a |      Set  06:22a   99%|
     |Sat 18| 06:11a  09:07p  14:55 | 10:25p  04:53a |Full  Rise 08:59p  100%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 19| 06:10a  09:08p  14:57 | 10:27p  04:52a |      Rise 10:07p   98%|
     |Mon 20| 06:09a  09:09p  15:00 | 10:28p  04:50a |      Rise 11:10p   95%|
     |Tue 21| 06:08a  09:10p  15:02 | 10:30p  04:49a |      Rise 12:07a   89%|
     |Wed 22| 06:07a  09:11p  15:03 | 10:31p  04:48a |      Rise 12:56a   83%|
     |Thu 23| 06:06a  09:12p  15:05 | 10:33p  04:47a |      Rise 01:37a   75%|
     |Fri 24| 06:06a  09:13p  15:07 | 10:34p  04:45a |      Rise 02:13a   66%|
     |Sat 25| 06:05a  09:14p  15:09 | 10:35p  04:44a |      Rise 02:43a   57%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 26| 06:04a  09:15p  15:11 | 10:37p  04:43a |L Qtr Rise 03:09a   47%|
     |Mon 27| 06:03a  09:16p  15:13 | 10:38p  04:42a |      Rise 03:34a   38%|
     |Tue 28| 06:03a  09:17p  15:14 | 10:39p  04:41a |      Rise 03:57a   29%|
     |Wed 29| 06:02a  09:18p  15:16 | 10:40p  04:40a |      Rise 04:21a   20%|
     |Thu 30| 06:01a  09:19p  15:17 | 10:42p  04:39a |      Rise 04:46a   13%|
     |Fri 31| 06:01a  09:20p  15:19 | 10:43p  04:38a |      Rise 05:13a    7%|
     +-----------------------------------------------------------------------+
     * Nautical Twilight
     ** Moonrise or moonset, whichever occurs between sunrise and sunset

Categories: Ephemeris Program, Month preview

04/01/2019 – Ephemeris – Previewing April skies

April 1, 2019 bobmoler Comments off

Ephemeris for April Fools Day, Monday, April 1st. Today the Sun will be up for 12 hours and 46 minutes, setting at 8:10, and it will rise tomorrow at 7:22. The Moon, half way from last quarter to new, will rise at 6:37 tomorrow morning.

Last year we were fooled by an abundance of snow in April. Hopefully we won’t be tricked again. Daylight hours in the Interlochen/Traverse City area and will increase from 12 hours and 46 minutes today to 14 hours 11 minutes on the 30th. The altitude, or angle, of the Sun above the southern horizon at local noon will ascend from 50 degrees today to 60 degrees on the 30th. The altitude of the Sun in the Straits area will be a degree lower, but their daylight hours will be a bit longer. The actual time of local apparent noon this month for the Interlochen/Traverse City area, when the Sun passes due south, will be about 1:43 p.m. This month Mars will be our only evening planet.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

April Evening Star Chart

Star Chart for April 2019 (10 p.m. EDT April 15, 2019). Created using my LookingUp program. Click on image to enlarge.

The planets and stars are plotted for the 15th at 10 p.m. EST in the evening and 6 a.m. for the morning chart. These are the chart times. Note that Traverse City is located approximately 45 minutes behind our time meridian, West 75° longitude. (An hour 45 minutes behind our daylight saving time meridian during EDT). To duplicate the star positions on a planisphere you may have to set it to 1 hour 45 minutes earlier than the current time.

April Morning Star Chart

Star Chart for April mornings 2019 (5 a.m. EST April 15, 2019). Created using my LookingUp program. Click on image to enlarge.

For a list of constellation names to go with the abbreviations click here.

Pointer stars at the front of the bowl of the Big Dipper point to Polaris the North Star.
Leaky dipper drips on Leo
Follow the arc of the handle of the Big Dipper to the star Arcturus, and
Extend like a spike to Spica,
The Summer Triangle is in red.
LyrR is the radiant of the Lyrid meteor shower that peaks on the 22nd.

Twilight Limits, Nautical and Astronomical

			EDT
Traverse City	Morning twilight		Evening twilight		Dark night		Moon
Date	Astro.	Nautical	Nautical	Astro.	Start	End	Illum.
2019-04-01	5h47m	6h24m	21h17m	21h53m	21h53m	5h47m	0.13
2019-04-02	5h45m	6h22m	21h18m	21h55m	21h55m	5h45m	0.07
2019-04-03	5h43m	6h20m	21h20m	21h57m	21h57m	5h43m	0.03
2019-04-04	5h41m	6h18m	21h21m	21h58m	21h58m	5h41m	0
2019-04-05	5h38m	6h16m	21h22m	22h00m	22h00m	5h38m	0
2019-04-06	5h36m	6h14m	21h24m	22h01m	22h01m	5h36m	0.02
2019-04-07	5h34m	6h12m	21h25m	22h03m	22h48m	5h34m	0.06
2019-04-08	5h32m	6h10m	21h27m	22h05m	23h54m	5h32m	0.12
2019-04-09	5h30m	6h08m	21h28m	22h06m	–	5h30m	0.2
2019-04-10	5h27m	6h06m	21h30m	22h08m	1h00m	5h27m	0.3
2019-04-11	5h25m	6h04m	21h31m	22h10m	2h04m	5h25m	0.41
2019-04-12	5h23m	6h02m	21h33m	22h11m	3h03m	5h23m	0.53
2019-04-13	5h21m	6h00m	21h34m	22h13m	3h55m	5h21m	0.64
2019-04-14	5h19m	5h58m	21h36m	22h15m	4h40m	5h19m	0.75
2019-04-15	5h16m	5h56m	21h37m	22h16m	–	–	0.85
2019-04-16	5h14m	5h54m	21h39m	22h18m	–	–	0.93
2019-04-17	5h12m	5h52m	21h40m	22h20m	–	–	0.93
2019-04-18	5h10m	5h50m	21h42m	22h22m	–	–	0.98
2019-04-19	5h07m	5h48m	21h43m	22h24m	–	–	1
2019-04-20	5h05m	5h46m	21h45m	22h25m	–	–	0.99
2019-04-21	5h03m	5h44m	21h46m	22h27m	22h27m	23h19m	0.96
2019-04-22	5h01m	5h42m	21h48m	22h29m	22h29m	–	0.9
2019-04-23	4h59m	5h40m	21h49m	22h31m	22h31m	0h24m	0.82
2019-04-24	4h56m	5h38m	21h51m	22h33m	22h33m	1h24m	0.74
2019-04-25	4h54m	5h36m	21h52m	22h34m	22h34m	2h16m	0.64
2019-04-26	4h52m	5h35m	21h54m	22h36m	22h36m	3h01m	0.54
2019-04-27	4h50m	5h33m	21h55m	22h38m	22h38m	3h39m	0.45
2019-04-28	4h48m	5h31m	21h57m	22h40m	22h40m	4h12m	0.35
2019-04-29	4h45m	5h29m	21h58m	22h42m	22h42m	4h41m	0.26
2019-04-30	4h43m	5h27m	22h00m	22h44m	22h44m	4h43m	0.18

Twilight calendar was generated using Cartes du Ciel (Sky Charts).

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2018/09/27/.

NASA Calendar of Planetary Events

   Date			Local Time	Event
Apr	1	Mo		        Venus: 34.6° W
 	2	Tu	12:17 AM	Moon-Venus: 3° N
 	2	Tu	07:01 PM	Moon-Mercury: 4° N
 	5	Fr	04:50 AM	New Moon
 	9	Tu	02:40 AM	Moon-Mars: 5° N
 	9	Tu	11:43 AM	Moon-Aldebaran: 2.2° S
 	11	Th	02:59 PM	Mercury Elongation: 27.7° W
 	11	Th	07:59 PM	Moon North Dec.: 22° N
 	12	Fr	02:08 PM	Moon Ascending Node
 	12	Fr	03:06 PM	First Quarter
 	13	Sa	04:12 PM	Moon-Beehive: 0.2° N
 	14	Su	08:08 PM	Mars-Aldebaran: 6.5° N
 	15	Mo	04:22 AM	Moon-Regulus: 2.7° S
 	16	Tu	02:03 PM	Mercury-Venus: 4.3° N
 	16	Tu	06:02 PM	Moon Perigee: 364200 km
 	19	Fr	07:12 AM	Full Moon
 	22	Mo	07:58 PM	Lyrid Shower: ZHR = 20
 	22	Mo	08:06 PM	Uranus Conjunction
 	23	Tu	07:36 AM	Moon-Jupiter: 1.8° S
 	24	We	05:22 PM	Moon South Dec.: 22.1° S
 	25	Th	10:38 AM	Moon-Saturn: 0.4° N
 	25	Th	11:02 AM	Moon Descending Node
 	26	Fr	06:18 PM	Last Quarter
 	28	Su	02:20 PM	Moon Apogee: 404600 km
May	1	We		        Venus: 27.8° W
All event times are given for UTC-5 hr: Eastern Standard or UTC-4 hr: Daylight Saving Time starting April 10th.

Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html.

If you go to the above site you can print out a list like the above for the entire year or calendar pages for your time zone.

Sun and Moon Rising and Setting Events

April, 2019 – Local time zone: EDT
Ephemeris of Sky Events for NMC Observatory
Date		Sun			Twilight*		Moon			Illum
		Rise	Set	Hours	End	Start	Phase	R/S**	Time	Fractn
Mon	1	07:23a	08:09p	12:45	09:14p	06:19a		Rise	06:37a	10%
Tue	2	07:21a	08:10p	12:49	09:15p	06:17a		Rise	07:02a	5%
Wed	3	07:20a	08:12p	12:52	09:17p	06:15a		Rise	07:26a	2%
Thu	4	07:18a	08:13p	12:55	09:18p	06:13a		Rise	07:50a	0%
Fri	5	07:16a	08:14p	12:58	09:19p	06:11a	New	Set	08:37p	1%
Sat	6	07:14a	08:15p	13:01	09:21p	06:09a		Set	09:41p	3%

Sun	7	07:12a	08:17p	13:04	09:22p	06:07a		Set	10:47p	7%
Mon	8	07:11a	08:18p	13:07	09:24p	06:05a		Set	11:53p	13%
Tue	9	07:09a	08:19p	13:10	09:25p	06:03a		Set	12:59a	21%
Wed	10	07:07a	08:20p	13:13	09:27p	06:01a		Set	02:03a	31%
Thu	11	07:05a	08:22p	13:16	09:28p	05:59a		Set	03:02a	41%
Fri	12	07:03a	08:23p	13:19	09:30p	05:57a	F Qtr	Set	03:54a	52%
Sat	13	07:02a	08:24p	13:22	09:31p	05:55a		Set	04:39a	64%

Sun	14	07:00a	08:25p	13:25	09:33p	05:53a		Set	05:18a	74%
Mon	15	06:58a	08:27p	13:28	09:34p	05:51a		Set	05:52a	84%
Tue	16	06:57a	08:28p	13:31	09:35p	05:49a		Set	06:23a	91%
Wed	17	06:55a	08:29p	13:34	09:37p	05:47a		Set	06:52a	97%
Thu	18	06:53a	08:30p	13:37	09:38p	05:45a		Set	07:22a	100%
Fri	19	06:51a	08:32p	13:40	09:40p	05:43a	Full	Rise	08:55p	99%
Sat	20	06:50a	08:33p	13:43	09:42p	05:41a		Rise	10:08p	97%

Sun	21	06:48a	08:34p	13:45	09:43p	05:39a		Rise	11:18p	92%
Mon	22	06:46a	08:35p	13:48	09:45p	05:38a		Rise	12:24a	85%
Tue	23	06:45a	08:37p	13:51	09:46p	05:36a		Rise	01:23a	77%
Wed	24	06:43a	08:38p	13:54	09:48p	05:34a		Rise	02:15a	68%
Thu	25	06:42a	08:39p	13:57	09:49p	05:32a		Rise	03:00a	59%
Fri	26	06:40a	08:40p	14:00	09:51p	05:30a	L Qtr	Rise	03:38a	49%
Sat	27	06:39a	08:41p	14:02	09:52p	05:28a		Rise	04:11a	40%

Sun	28	06:37a	08:43p	14:05	09:54p	05:26a		Rise	04:40a	31%
Mon	29	06:36a	08:44p	14:08	09:55p	05:24a		Rise	05:06a	23%
Tue	30	06:34a	08:45p	14:11	09:57p	05:23a		Rise	05:30a	15%
* Nautical Twilight
** Moonrise or moonset, whichever occurs between sunset and sunrise

Categories: Ephemeris Program, Month preview

02/28/2019 – Ephemeris – Looking ahead at March skies

February 28, 2019 bobmoler Comments off

Ephemeris for Thursday, February 28th. Today the Sun will be up for 11 hours and 6 minutes, setting at 6:28, and it will rise tomorrow at 7:20. The Moon, 2 days past last quarter, will rise at 4:38 tomorrow morning.

Let’s look at the skies of March, which will start tomorrow. During March the increase in daylight hours are at its greatest, with spring 3 weeks away. Daylight hours will increase from 11 hours and 9 minutes tomorrow to 12 hours and 42 minutes on the 31st. Along with that, the altitude of the Sun at noon will increase from 38 degrees tomorrow to 49 ½ degrees at month’s end. Local noon, by the way for Interlochen and Traverse City, is about 12:50 p.m, which is mainly due to the fact that our standard time meridian happens to run through Philadelphia. That’s before daylight time starts in eleven days. Winter ends and spring will begin at 5:58 p.m. on the 20th.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addenda

March Evening Star Chart

Star Chart for March 2019 (10 p.m. EDT March 15, 2019). Created using my LookingUp program. Click on image to enlarge.

Note the chart times of 10 p.m. and 6 a.m. are for the 15th. For each week before the 15th add ½ hour (28 minutes if you’re picky). For each week after the 15th subtract ½ hour. The planet positions are updated each Wednesday on this blog. For planet positions on dates other than the 15th, check the Wednesday planet posts on this blog.

March Morning Star Chart

Star Chart for March mornings 2019 (6 a.m. EST March 15, 2019). Created using my LookingUp program. Click on image to enlarge.

For a list of constellation names to go with the abbreviations click here.

Pointer stars at the front of the bowl of the Big Dipper point to Polaris the North Star.
Follow the arc of the handle of the Big Dipper to the star Arcturus, and
Extend like a spike to Spica,
The Summer Triangle is in red.

Twilight Limits, Nautical and Astronomical

			EST/EDT
	Morning twilight		Evening twilight		Dark night		Moon
Date	Astro.	Nautical	Nautical	Astro.	Start	End	Illum.
2018-03-01	5h44m	6h17m	19h32m	20h06m	–	–	0.99
2018-03-02	5h42m	6h16m	19h33m	20h07m	–	–	1.00
2018-03-03	5h40m	6h14m	19h34m	20h08m	20h08m	20h40m	0.98
2018-03-04	5h38m	6h12m	19h36m	20h10m	20h10m	21h48m	0.93
2018-03-05	5h37m	6h11m	19h37m	20h11m	20h11m	22h54m	0.87
2018-03-06	5h35m	6h09m	19h38m	20h12m	20h12m	23h57m	0.79
2018-03-07	5h33m	6h07m	19h40m	20h14m	20h14m	–	0.70
2018-03-08	5h31m	6h05m	19h41m	20h15m	20h15m	0h58m	0.60
2018-03-09	5h29m	6h03m	19h42m	20h16m	20h16m	1h56m	0.50
2018-03-10	5h27m	6h02m	19h44m	20h18m	20h18m	2h50m	0.40
2018-03-11	6h26m	7h00m	20h45m	21h19m	21h19m	4h40m	0.31
2018-03-12	6h24m	6h58m	20h46m	21h20m	21h20m	5h25m	0.22
2018-03-13	6h22m	6h56m	20h47m	21h22m	21h22m	6h06m	0.15
2018-03-14	6h20m	6h54m	20h49m	21h23m	21h23m	6h20m	0.08
2018-03-15	6h18m	6h52m	20h50m	21h25m	21h25m	6h18m	0.04
2018-03-16	6h16m	6h50m	20h51m	21h26m	21h26m	6h16m	0.01
2018-03-17	6h14m	6h49m	20h53m	21h27m	21h27m	6h14m	0.00
2018-03-18	6h12m	6h47m	20h54m	21h29m	21h29m	6h12m	0.02
2018-03-19	6h10m	6h45m	20h55m	21h30m	22h21m	6h10m	0.06
2018-03-20	6h12m	6h47m	21h01m	21h36m	23h30m	6h12m	0.12
2018-03-21	6h10m	6h45m	21h02m	21h37m	–	6h10m	0.21
2018-03-22	6h08m	6h43m	21h03m	21h39m	0h39m	6h08m	0.31
2018-03-23	6h06m	6h41m	21h05m	21h40m	1h48m	6h06m	0.42
2018-03-24	6h03m	6h39m	21h06m	21h42m	2h54m	6h03m	0.54
2018-03-25	6h01m	6h37m	21h07m	21h43m	3h54m	6h01m	0.66
2018-03-26	5h59m	6h35m	21h09m	21h45m	4h48m	5h59m	0.77
2018-03-27	5h57m	6h33m	21h10m	21h46m	5h34m	5h57m	0.86
2018-03-28	5h55m	6h31m	21h12m	21h48m	–	–	0.93
2018-03-29	5h53m	6h29m	21h13m	21h49m	–	–	0.93
2018-03-30	5h51m	6h27m	21h14m	21h51m	–	–	0.98
2018-03-31	5h49m	6h25m	21h16m	21h52m	–	–	1.00

Twilight calendar was generated using Cartes du Ciel (Sky Charts).

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2019/09/27/.

NASA Calendar of Planetary Events

Date			Local Time	Event
Mar	1	Fr	01:23 AM	Moon South Dec.: 21.6° S
	1	Fr		Venus: 40.8° W
	1	Fr	01:40 PM	Moon-Saturn: 0.3° S
	2	Sa	06:03 AM	Moon Descending Node
	2	Sa	04:28 PM	Moon-Venus: 1.3° N
	4	Mo	06:25 AM	Moon Apogee: 406400 km
	6	We	11:04 AM	New Moon
	6	We	07:48 PM	Neptune Conjunction
	13	We	06:13 AM	Moon-Aldebaran: 2° S
	14	Th	06:27 AM	First Quarter
	14	Th	09:43 PM	Mercury Inferior Conj.
	15	Fr	01:59 PM	Moon North Dec.: 21.8° N
	16	Sa	12:22 PM	Moon Ascending Node
	17	Su	09:01 AM	Moon-Beehive: 0.5° N
	18	Mo	07:59 PM	Moon-Regulus: 2.5° S
	19	Tu	03:47 PM	Moon Perigee: 359400 km
	20	We	05:58 PM	Vernal Equinox
	20	We	09:43 PM	Full Moon
	26	Tu	10:28 PM	Moon-Jupiter: 2° S
	28	Th	12:10 AM	Last Quarter
	28	Th	09:02 AM	Moon South Dec.: 21.9° S
	29	Fr	01:11 AM	Moon-Saturn: 0.1° N
	29	Fr	09:08 AM	Moon Descending Node
	30	Sa	11:08 PM	Mars-Pleiades: 3.2° S
	31	Su	08:14 PM	Moon Apogee: 405600 km
Apr	1	Mo		Venus: 34.6° W

All event times are given for UTC-5 hr: Eastern Standard or UTC-4 hr: Daylight Saving Time starting March 10th.

Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html.

If you go to the above site you can print out a list like the above for the entire year or calendar pages for your time zone.

Sun and Moon Rising and Setting Events

Ephemeris of Sky Events for NMC Observatory
March, 2019 – Local time zone: EST
		Sun			Twilight*		Moon			Illum
Date		Rise	Set	Hours	End	Start	Phase	R/S**	Time	Fractn
Fri	1	07:20a	06:30a	11:09	07:33p	06:17a		Rise	05:22a	18
Sat	2	07:18a	06:31p	11:12	07:34p	06:15a		Rise	06:02a	12
Sun	3	07:16a	06:32p	11:15	07:35p	06:13a		Rise	06:36a	6
Mon	4	07:15a	06:34p	11:18	07:36p	06:12a		Rise	07:06a	3
Tue	5	07:13a	06:35p	11:22	07:38p	06:10a		Rise	07:33a	0
Wed	6	07:11a	06:36p	11:25	07:39p	06:08a	New	Set	06:41p	0
Thu	7	07:09a	06:37p	11:28	07:40p	06:06a		Set	07:41p	2
Fri	8	07:07a	06:39p	11:31	07:42p	06:05a		Set	08:43p	5
Sat	9	07:06a	06:40p	11:34	07:43p	06:03a		Set	09:45p	10
* Start EDT *
Sun	10	08:04a	07:41p	11:37	08:44p	07:01a		Set	11:49p	17
Mon	11	08:02a	07:43p	11:40	08:46p	06:59a		Set	12:54a	25
Tue	12	08:00a	07:44p	11:43	08:47p	06:57a		Set	02:00a	35
Wed	13	07:58a	07:45p	11:46	08:48p	06:56a		Set	03:05a	45
Thu	14	07:57a	07:47p	11:49	08:50p	06:54a	F Qtr	Set	04:08a	56
Fri	15	07:55a	07:48p	11:53	08:51p	06:52a		Set	05:06a	67
Sat	16	07:53a	07:49p	11:56	08:52p	06:50a		Set	05:58a	77
Sun	17	07:51a	07:50p	11:59	08:53p	06:48a		Set	06:42a	87
Mon	18	07:49a	07:52p	12:02	08:55p	06:46a		Set	07:21a	94
Tue	19	07:47a	07:53p	12:05	08:56p	06:44a		Set	07:54a	98
Wed	20	07:46a	07:54p	12:08	08:57p	06:42a	Full	Rise	07:35p	100
Thu	21	07:44a	07:55p	12:11	08:59p	06:40a		Rise	08:52p	99
Fri	22	07:42a	07:57p	12:14	09:00p	06:39a		Rise	10:07p	95
Sat	23	07:40a	07:58p	12:18	09:02p	06:37a		Rise	11:20p	88
Sun	24	07:38a	07:59p	12:21	09:03p	06:35a		Rise	12:30a	80
Mon	25	07:36a	08:00p	12:24	09:04p	06:33a		Rise	01:36a	71
Tue	26	07:34a	08:02p	12:27	09:06p	06:31a		Rise	02:37a	62
Wed	27	07:33a	08:03p	12:30	09:07p	06:29a		Rise	03:32a	52
Thu	28	07:31a	08:04p	12:33	09:08p	06:27a	L Qtr	Rise	04:20a	42
Fri	29	07:29a	08:05p	12:36	09:10p	06:25a		Rise	05:02a	33
Sat	30	07:27a	08:07p	12:39	09:11p	06:23a		Rise	05:38a	24
Sun	31	07:25a	08:08p	12:42	09:12p	06:21a		Rise	06:09a	17

* Nautical Twilight
** Moonrise or moonset, whichever occurs between sunset and sunrise

Created using my LookingUp for DOS output as CSV.

Categories: Ephemeris Program, Month preview

01/31/2019 – Ephemeris – Previewing February’s skies

January 31, 2019 bobmoler Comments off

Ephemeris for Thursday, January 31st. Today the Sun will be up for 9 hours and 46 minutes, setting at 5:49, and it will rise tomorrow at 8:02. The Moon, half way from last quarter to new, will rise at 5:50 tomorrow morning.

February is the shortest month, even so the daylight hours throughout the month will be getting longer. Daylight hours will increase from 9 hours and 49 minutes tomorrow the first to 11 hours and 6 minutes on the 28th. The sunrise time will decrease from 8:02 tomorrow to 7:22 at month’s end. The sunset times will increase from 5:51 tomorrow to 6:28 on the 28th. Along with that the altitude of the sun at noon will increase from 28 degrees tomorrow to nearly 38 degrees at month’s end. Local noon, by the way for Interlochen and Traverse City is about 12:55 p.m. Mercury has just entered the evening sky and will be visible in twilight after sunset later this month.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addenda

February Evening Star Chart

Star Chart for February 2019 (9 p.m. EST February 15, 2019). Created using my LookingUp program. Click on image to enlarge.

The planets and stars are plotted for the 15th at 9 p.m. EST in the evening and 6 a.m. for the morning chart. These are the chart times. Note that Traverse City is located approximately 45 minutes behind our time meridian. (An hour 45 minutes behind our daylight saving time meridian during EDT). To duplicate the star positions on a planisphere you may have to set it to 1 hour 45 minutes earlier than the current time.

Note the chart times of 9 p.m. and 6 a.m. are for the 15th. For each week before the 15th add ½ hour (28 minutes if you’re picky). For each week after the 15th subtract ½ hour. The planet positions are updated each Wednesday on this blog. For planet positions on dates other than the 15th, check the Wednesday planet posts on this blog.

February Morning Star Chart

Star Chart for February mornings 2019 (6 a.m. EST February 15, 2019). Created using my LookingUp program. Click on image to enlarge.

For a list of constellation names to go with the abbreviations click here.

Pointer stars at the front of the bowl of the Big Dipper point to Polaris the North Star.
Follow the arc of the handle of the Big Dipper to the star Arcturus, and
Extend like a spike to Spica,
The Summer Triangle is in red.

Twilight Limits, Nautical and Astronomical

Traverse City	Morning twilight		Evening twilight		Dark night		Moon
Date	Astro.	Nautical	Nautical	Astro.	Start	End	Illum.
2019-02-01	6h22m	6h56m	18h55m	19h30m	19h30m	5h51m	0.09
2019-02-02	6h21m	6h55m	18h57m	19h31m	19h31m	6h21m	0.04
2019-02-03	6h20m	6h54m	18h58m	19h32m	19h32m	6h20m	0.01
2019-02-04	6h19m	6h53m	18h59m	19h33m	19h33m	6h19m	0
2019-02-05	6h18m	6h52m	19h01m	19h35m	19h35m	6h18m	0.01
2019-02-06	6h17m	6h51m	19h02m	19h36m	19h48m	6h17m	0.03
2019-02-07	6h16m	6h50m	19h03m	19h37m	20h48m	6h16m	0.08
2019-02-08	6h15m	6h49m	19h04m	19h38m	21h49m	6h15m	0.14
2019-02-09	6h14m	6h47m	19h06m	19h40m	22h50m	6h14m	0.21
2019-02-10	6h12m	6h46m	19h07m	19h41m	23h53m	6h12m	0.3
2019-02-11	6h11m	6h45m	19h08m	19h42m	–	6h11m	0.4
2019-02-12	6h10m	6h44m	19h10m	19h43m	0h57m	6h10m	0.51
2019-02-13	6h08m	6h42m	19h11m	19h45m	2h03m	6h08m	0.62
2019-02-14	6h07m	6h41m	19h12m	19h46m	3h11m	6h07m	0.73
2019-02-15	6h06m	6h40m	19h13m	19h47m	4h18m	6h06m	0.83
2019-02-16	6h04m	6h38m	19h15m	19h48m	5h22m	6h04m	0.91
2019-02-17	6h03m	6h37m	19h16m	19h50m	–	–	0.97
2019-02-18	6h02m	6h35m	19h17m	19h51m	–	–	0.97
2019-02-19	6h00m	6h34m	19h19m	19h52m	–	–	1
2019-02-20	5h59m	6h32m	19h20m	19h54m	–	–	0.99
2019-02-21	5h57m	6h31m	19h21m	19h55m	19h55m	21h05m	0.96
2019-02-22	5h55m	6h29m	19h22m	19h56m	19h56m	22h19m	0.9
2019-02-23	5h54m	6h28m	19h24m	19h57m	19h57m	23h31m	0.81
2019-02-24	5h52m	6h26m	19h25m	19h59m	19h59m	–	0.71
2019-02-25	5h51m	6h24m	19h26m	20h00m	20h00m	0h41m	0.61
2019-02-26	5h49m	6h23m	19h28m	20h01m	20h01m	1h47m	0.5
2019-02-27	5h47m	6h21m	19h29m	20h03m	20h03m	2h49m	0.4
2019-02-28	5h46m	6h20m	19h30m	20h04m	20h04m	3h46m	0.3

Twilight calendar was generated using Cartes du Ciel (Sky Charts).

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2019/09/27/

NASA Calendar of Planetary Events

Date			Local Time	Event
Feb	1	Fr		Venus: 45.1° W
	1	Fr	7:48 PM	Moon South Dec.: 21.5° S
	2	Sa	2:18 AM	Moon-Saturn: 0.7° S
	3	Su	1:35 AM	Moon Descending Node
	4	Mo	4:04 PM	New Moon
	5	Tu	4:26 AM	Moon Apogee: 406600 km
	12	Tu	5:26 PM	First Quarter
	13	We	10:29 PM	Moon-Aldebaran: 1.7° S
	16	Sa	4:56 AM	Moon North Dec.: 21.6° N
	17	Su	4:42 AM	Moon Ascending Node
	17	Su	10:05 PM	Moon-Beehive: 0.6° N
	18	Mo	9:16 AM	Venus-Saturn: 1.1° N
	19	Tu	4:06 AM	Moon Perigee: 356800 km
	19	Tu	8:08 AM	Moon-Regulus: 2.4° S
	19	Tu	10:53 AM	Full Moon
	26	Tu	6:28 AM	Last Quarter
	26	Tu	7:59 PM	Mercury Greatest Elongation: 18.1° E
	27	We	9:17 AM	Moon-Jupiter: 2.5° S
Mar	1	Fr		Venus 40.8° W

All event times are given for UTC-5:00: Eastern Standard or Daylight Time

Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html

If you go to the above site you can print out a list like the above for the entire year or calendar pages for your time zone.

Sun and Moon Rising and Setting Events

February, 2019 – Local time zone: EST
Ephemeris of Sky Events for Interlochen/TC
Date		Sun			Twilight*		Moon			Illum
		Rise	Set	Hours	End	Start	Phase	R/S**	Time	Fractn
Fri	1	08:02a	05:51p	09:49	06:57p	06:56a		Rise	06:40a	7%
Sat	2	08:00a	05:52p	09:51	06:58p	06:55a		Rise	07:24a	3%

Sun	3	07:59a	05:54p	09:54	06:59p	06:53a		Rise	08:01a	1%
Mon	4	07:58a	05:55p	09:56	07:01p	06:52a	New	Set	05:48p	0%
Tue	5	07:57a	05:56p	09:59	07:02p	06:51a		Set	06:47p	1%
Wed	6	07:56a	05:58p	10:02	07:03p	06:50a		Set	07:47p	4%
Thu	7	07:54a	05:59p	10:04	07:04p	06:49a		Set	08:48p	9%
Fri	8	07:53a	06:01p	10:07	07:06p	06:48a		Set	09:48p	15%
Sat	9	07:52a	06:02p	10:10	07:07p	06:47a		Set	10:50p	22%

Sun	10	07:50a	06:03p	10:13	07:08p	06:45a		Set	11:52p	31%
Mon	11	07:49a	06:05p	10:16	07:10p	06:44a		Set	12:57a	40%
Tue	12	07:47a	06:06p	10:18	07:11p	06:43a	F Qtr	Set	02:03a	51%
Wed	13	07:46a	06:08p	10:21	07:12p	06:41a		Set	03:10a	61%
Thu	14	07:44a	06:09p	10:24	07:14p	06:40a		Set	04:18a	72%
Fri	15	07:43a	06:11p	10:27	07:15p	06:39a		Set	05:21a	81%
Sat	16	07:41a	06:12p	10:30	07:16p	06:37a		Set	06:19a	90%

Sun	17	07:40a	06:13p	10:33	07:17p	06:36a		Set	07:09a	96%
Mon	18	07:38a	06:15p	10:36	07:19p	06:34a		Set	07:52a	99%
Tue	19	07:37a	06:16p	10:39	07:20p	06:33a	Full	Rise	06:28p	100%
Wed	20	07:35a	06:18p	10:42	07:21p	06:32a		Rise	07:47p	97%
Thu	21	07:34a	06:19p	10:45	07:23p	06:30a		Rise	09:05p	92%
Fri	22	07:32a	06:20p	10:48	07:24p	06:28a		Rise	10:19p	84%
Sat	23	07:30a	06:22p	10:51	07:25p	06:27a		Rise	11:31p	75%

Sun	24	07:29a	06:23p	10:54	07:26p	06:25a		Rise	12:40a	65%
Mon	25	07:27a	06:24p	10:57	07:28p	06:24a		Rise	01:46a	55%
Tue	26	07:25a	06:26p	11:00	07:29p	06:22a	L Qtr	Rise	02:49a	45%
Wed	27	07:24a	06:27p	11:03	07:30p	06:20a		Rise	03:46a	35%
Thu	28	07:22a	06:28p	11:06	07:32p	06:19a		Rise	04:38a	26%
* Nautical Twilight
** Moonrise or moonset, whichever occurs between sunset and sunrise

Created using my LookingUp for DOS output as HTML.

Categories: Ephemeris Program, Month preview

01/01/2019 – Ephemeris – Previewing the month of January 2019

January 1, 2019 bobmoler Comments off

Ephemeris for New Years Day, Tuesday, January 1st. The Sun will rise at 8:20. It’ll be up for 8 hours and 52 minutes, setting at 5:12. The Moon, 3 days past last quarter, will rise at 4:59 tomorrow morning. | Happy New Year. Let’s preview the month of January. We’re a day from the latest sunrise at about the same time as today, 8:20 a.m. and will back down to 8:03 by the 31st. Sunset times are currently increasing by a minute a day from 5:12 p.m. today to 5:49 at month’s end. Listeners will have about the same sunrise time in Ludington, Interlochen/Traverse City, Petoskey and Mackinaw City, but the sunset times will vary markedly with the sunset times earlier in the north than the south. The Quadrantid meteor shower will reach peak on the 3rd in the evening. Also on the 3rd the Earth will be its closest to the Sun for the entire year. And on the 20th there will be a total lunar eclipse in the evening.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addenda

January Evening Star Chart

Star Chart for January 2019 (9 p.m. EST January 15, 2019). Created using my LookingUp program. Click on image to enlarge.

January Morning Star Chart

Star Chart for January mornings 2019 (6 a.m. EST January 15, 2019). Created using my LookingUp program. Click on image to enlarge.

For a list of constellation names to go with the abbreviations click here.

Pointer stars at the front of the bowl of the Big Dipper point to Polaris the North Star.
Follow the arc of the handle of the Big Dipper to the star Arcturus, and
Extend like a spike to Spica,
The Summer Triangle is in red.
Quadr on the evening and morning star charts is the radiant of the Quadrantid meteor shower which peaks at 9:20 p.m. on the evening of the 3rd.

Twilight

Traverse City			EST
	Morning twilight		Evening twilight		Dark night		Moon
Date	Astro.	Nautical	Nautical	Astro.	Start	End	Illum.
2019-01-01	6h35m	7h10m	18h21m	18h57m	18h57m	3h54m	0.19
2019-01-02	6h35m	7h10m	18h22m	18h58m	18h58m	4h59m	0.11
2019-01-03	6h35m	7h11m	18h23m	18h58m	18h58m	6h02m	0.05
2019-01-04	6h35m	7h11m	18h24m	18h59m	18h59m	6h35m	0.02
2019-01-05	6h35m	7h11m	18h25m	19h00m	19h00m	6h35m	0
2019-01-06	6h35m	7h11m	18h26m	19h01m	19h01m	6h35m	0
2019-01-07	6h35m	7h10m	18h27m	19h02m	19h02m	6h35m	0.03
2019-01-08	6h35m	7h10m	18h28m	19h03m	19h56m	6h35m	0.07
2019-01-09	6h35m	7h10m	18h29m	19h04m	20h55m	6h35m	0.12
2019-01-10	6h35m	7h10m	18h30m	19h05m	21h55m	6h35m	0.2
2019-01-11	6h35m	7h10m	18h31m	19h06m	22h56m	6h35m	0.28
2019-01-12	6h34m	7h09m	18h32m	19h07m	23h57m	6h34m	0.37
2019-01-13	6h34m	7h09m	18h33m	19h08m	–	6h34m	0.47
2019-01-14	6h34m	7h09m	18h34m	19h09m	0h59m	6h34m	0.57
2019-01-15	6h34m	7h08m	18h35m	19h10m	2h04m	6h34m	0.68
2019-01-16	6h33m	7h08m	18h36m	19h11m	3h11m	6h33m	0.78
2019-01-17	6h33m	7h08m	18h37m	19h12m	4h21m	6h33m	0.87
2019-01-18	6h32m	7h07m	18h38m	19h13m	5h31m	6h32m	0.94
2019-01-19	6h32m	7h07m	18h40m	19h14m	–	–	0.98
2019-01-20	6h31m	7h06m	18h41m	19h15m	–	–	0.98
2019-01-21	6h31m	7h05m	18h42m	19h17m	–	–	1
2019-01-22	6h30m	7h05m	18h43m	19h18m	19h18m	19h41m	0.98
2019-01-23	6h29m	7h04m	18h44m	19h19m	19h19m	20h59m	0.93
2019-01-24	6h29m	7h03m	18h46m	19h20m	19h20m	22h15m	0.86
2019-01-25	6h28m	7h03m	18h47m	19h21m	19h21m	23h28m	0.76
2019-01-26	6h27m	7h02m	18h48m	19h22m	19h22m	–	0.66
2019-01-27	6h27m	7h01m	18h49m	19h24m	19h24m	0h38m	0.55
2019-01-28	6h26m	7h00m	18h50m	19h25m	19h25m	1h46m	0.44
2019-01-29	6h25m	6h59m	18h52m	19h26m	19h26m	2h52m	0.33
2019-01-30	6h24m	6h58m	18h53m	19h27m	19h27m	3h56m	0.24
2019-01-31	6h23m	6h57m	18h54m	19h28m	19h28m	4h55m	0.16

Twilight calendar was generated using Cartes du Ciel (Sky Charts).

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2019/09/27/

NASA Calendar of Planetary Events

	Date		Time	Event
Jan	1	Tu		Venus: 46.9° W
	1	Tu	04:50:00 PM	Moon-Venus: 1.4° S
	1	Tu	11:53:00 PM	Saturn Conjunction
	3	Th	02:37:00 AM	Moon-Jupiter: 3.4° S
	3	Th	04:59:00 AM	Perihelion: 0.9833 AU
	3	Th	09:28:00 PM	Quadrantid Shower: ZHR = 120
	5	Sa	01:46:00 PM	Moon South Dec.: 21.6° S
	5	Sa	08:28:00 PM	New Moon
	5	Sa	08:41:00 PM	Partial Solar Eclipse*
	5	Sa	11:59:00 PM	Venus Elongation: 47° W
	6	Su	07:08:00 PM	Moon Descending Node
	8	Tu	11:29:00 PM	Moon Apogee: 406100 km
	14	Mo	01:46:00 AM	First Quarter
	17	Th	01:20:00 PM	Moon-Aldebaran: 1.6° S
	19	Sa	06:20:00 PM	Moon North Dec.: 21.5° N
	20	Su	05:48:00 PM	Moon Ascending Node
	21	Mo	12:12:00 AM	Total Lunar Eclipse
	21	Mo	12:16:00 AM	Full Moon
	21	Mo	10:32:00 AM	Moon-Beehive: 0.6° N
	21	Mo	02:58:00 PM	Moon Perigee: 357300 km
	22	Tu	10:10:00 AM	Venus-Jupiter: 2.4° N
	22	Tu	08:41:00 PM	Moon-Regulus: 2.5° S
	27	Su	04:11:00 PM	Last Quarter
	29	Tu	09:46:00 PM	Mercury Superior Conj.
	30	We	06:54:00 PM	Moon-Jupiter: 3° S
	31	Th	12:36:00 PM	Moon-Venus: 0.1° S
Feb	1	Fr		Venus: 45.1° W

* Eclipse affects east Asia and the north Pacific

All event times are given for UTC-5:00: Eastern Standard or Daylight Time

Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html

If you go to the above site you can print out a list like the above for the entire year or calendar pages for your time zone.

Sun and Moon Rising and Setting Events

Ephemeris of Sky Events for NMC Observatory
January 2019 – Local time zone: EST
Date		Sun			Twilight*		Moon			Illum
		Rise	Set	Hours	End	Start	Phase	R/S**	Time	Fractn
Tue	1	08:20a	05:12p	8:52	06:23p	07:09a		Rise	04:59a	15
Wed	2	08:20a	05:13p	8:53	06:23p	07:09a		Rise	06:02a	9
Thu	3	08:20a	05:14p	8:54	06:24p	07:09a		Rise	07:01a	4
Fri	4	08:20a	05:15p	8:55	06:25p	07:10a		Rise	07:55a	1
Sat	5	08:19a	05:16p	8:56	06:26p	07:10a	New	Set	05:08p	0
Sun	6	08:19a	05:17p	8:57	06:27p	07:09a		Set	06:01p	1
Mon	7	08:19a	05:18p	8:59	06:28p	07:09a		Set	06:57p	3
Tue	8	08:19a	05:19p	9:00	06:29p	07:09a		Set	07:55p	8
Wed	9	08:19a	05:20p	9:01	06:30p	07:09a		Set	08:55p	13
Thu	10	08:18a	05:22p	9:03	06:31p	07:09a		Set	09:55p	20
Fri	11	08:18a	05:23p	9:04	06:32p	07:09a		Set	10:55p	28
Sat	12	08:18a	05:24p	9:06	06:33p	07:08a		Set	11:56p	37
Sun	13	08:17a	05:25p	9:08	06:34p	07:08a		Set	12:59a	47
Mon	14	08:17a	05:26p	9:09	06:35p	07:08a	F Qtr	Set	02:04a	57
Tue	15	08:16a	05:28p	9:11	06:36p	07:07a		Set	03:11a	67
Wed	16	08:16a	05:29p	9:13	06:38p	07:07a		Set	04:20a	77
Thu	17	08:15a	05:30p	9:15	06:39p	07:07a		Set	05:31a	86
Fri	18	08:14a	05:31p	9:17	06:40p	07:06a		Set	06:39a	93
Sat	19	08:14a	05:33p	9:19	06:41p	07:06a		Set	07:41a	98
Sun	20	08:13a	05:34p	9:21	06:42p	07:05a		Set	08:36a	100
Mon	21	08:12a	05:35p	9:23	06:43p	07:04a	Full	Rise	06:23p	99
Tue	22	08:11a	05:37p	9:25	06:44p	07:04a		Rise	07:41p	95
Wed	23	08:11a	05:38p	9:27	06:46p	07:03a		Rise	08:59p	89
Thu	24	08:10a	05:40p	9:29	06:47p	07:02a		Rise	10:14p	80
Fri	25	08:09a	05:41p	9:32	06:48p	07:02a		Rise	11:27p	70
Sat	26	08:08a	05:42p	9:34	06:49p	07:01a		Rise	12:38a	60
Sun	27	08:07a	05:44p	9:36	06:51p	07:00a	L Qtr	Rise	01:46a	49
Mon	28	08:06a	05:45p	9:39	06:52p	06:59a		Rise	02:52a	38
Tue	29	08:05a	05:46p	9:41	06:53p	06:58a		Rise	03:55a	29
Wed	30	08:04a	05:48p	9:44	06:54p	06:57a		Rise	04:55a	20
Thu	31	08:03a	05:49p	9:46	06:56p	06:56a		Rise	05:50a	13
* Nautical Twilight
* Moonrise or moonset, whichever occurs between sunset and sunrise

Categories: Ephemeris Program, Month preview

11/30/2018 – Ephemeris – Previewing December skies

November 30, 2018 bobmoler Comments off

Bob Moler with Ephemeris for Friday, November 30th. The Sun will rise at 7:58. It’ll be up for 9 hours and 5 minutes, setting at 5:04. The Moon, 1 day past last quarter, will rise at 1:29 tomorrow morning.

Let’s preview December’s skies. Winter will officially arrive on the 21st at 5:22 p.m., the winter solstice. The noontime sun will dip from 23 ½ degrees to a bit less than 22 degrees above the southern horizon on that day. There will be little movement in the sunset times: In the Traverse City/Interlochen area this will be from 5:03 tomorrow, down to 5:02 and then advancing to 5:11 at the end of the month. The sunrise times will advance from 7:58 tomorrow to 8:20 on the 31st. The big event in December will be the Geminid meteor shower whose maximum is on the morning of the 14th. An old comet will make a close pass of the Earth and may be quite bright by mid-month. Watch for Comet Wirtanen.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addenda

December Evening Star Chart

Star Chart for December 2018 (9 p.m. EST December 15, 2018). Created using my LookingUp program. Click on image to enlarge.

December Morning Star Chart

Star Chart for December mornings 2018 (6 a.m. EST December 15, 2018). Created using my LookingUp program. Click on image to enlarge. The original morning chart uploaded December 1st was outdated.

For a list of constellation names to go with the abbreviations click here.

Pointer stars at the front of the bowl of the Big Dipper point to Polaris the North Star.
Follow the arc of the handle of the Big Dipper to the star Arcturus, and
Extend like a spike to Spica,
The Summer Triangle is in red.
GemR on the evening and morning star charts is the radiant of the Geminid meteor shower which peaks on the morning of the 14th,

Twilight

			Time zone=EDT
	Morning twilight		Evening twilight		Dark night		Moon
Date	Astronomical	Nautical	Nautical	Astronomical	Start	End	Illum.
2018-12-01	6h20m	6h55m	18h16m	18h51m	18h51m	1h29m	0.33
2018-12-02	6h21m	6h56m	18h15m	18h50m	18h50m	2h39m	0.23
2018-12-03	6h22m	6h57m	18h15m	18h50m	18h50m	3h48m	0.14
2018-12-04	6h23m	6h58m	18h15m	18h50m	18h50m	4h56m	0.07
2018-12-05	6h24m	6h59m	18h15m	18h50m	18h50m	6h03m	0.03
2018-12-06	6h25m	7h00m	18h15m	18h50m	18h50m	6h25m	0.00
2018-12-07	6h26m	7h01m	18h15m	18h50m	18h50m	6h26m	0.00
2018-12-08	6h26m	7h02m	18h15m	18h50m	18h50m	6h26m	0.02
2018-12-09	6h27m	7h03m	18h15m	18h50m	19h15m	6h27m	0.06
2018-12-10	6h28m	7h04m	18h15m	18h50m	20h09m	6h28m	0.12
2018-12-11	6h29m	7h04m	18h15m	18h50m	21h06m	6h29m	0.19
2018-12-12	6h30m	7h05m	18h15m	18h51m	22h05m	6h30m	0.27
2018-12-13	6h30m	7h06m	18h15m	18h51m	23h05m	6h30m	0.36
2018-12-14	6h31m	7h07m	18h16m	18h51m	–	6h31m	0.45
2018-12-15	6h32m	7h07m	18h16m	18h51m	0h06m	6h32m	0.55
2018-12-16	6h32m	7h08m	18h16m	18h52m	1h07m	6h32m	0.65
2018-12-17	6h33m	7h09m	18h16m	18h52m	2h11m	6h33m	0.75
2018-12-18	6h30m	7h05m	18h13m	18h48m	3h16m	6h30m	0.84
2018-12-19	6h30m	7h06m	18h13m	18h49m	4h24m	6h30m	0.91
2018-12-20	6h31m	7h06m	18h14m	18h49m	5h34m	6h31m	0.97
2018-12-21	6h31m	7h07m	18h14m	18h50m	–	–	0.97
2018-12-22	6h32m	7h07m	18h15m	18h50m	–	–	1.00
2018-12-23	6h32m	7h08m	18h15m	18h51m	–	–	1.00
2018-12-24	6h33m	7h08m	18h16m	18h51m	18h51m	19h35m	0.97
2018-12-25	6h33m	7h09m	18h16m	18h52m	18h52m	20h49m	0.91
2018-12-26	6h34m	7h09m	18h17m	18h53m	18h53m	22h05m	0.82
2018-12-27	6h34m	7h09m	18h18m	18h53m	18h53m	23h19m	0.72
2018-12-28	6h34m	7h10m	18h18m	18h54m	18h54m	–	0.61
2018-12-29	6h34m	7h10m	18h19m	18h55m	18h55m	0h30m	0.49
2018-12-30	6h35m	7h10m	18h20m	18h55m	18h55m	1h40m	0.38
2018-12-31	6h35m	7h10m	18h21m	18h56m	18h56m	2h48m	0.28

Twilight calendar was generated using Cartes du Ciel (Sky Charts).

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2018/09/27/

NASA Calendar of Planetary Events

Date			Local	Event
			Time
Dec	1	Sa		Venus: 39.9° W
	3	Mo	01:42:00 PM	Moon-Venus: 3.8° S
	7	Fr	02:20:00 AM	New Moon
	9	Su	12:30:00 AM	Moon-Saturn: 1.2° S
	9	Su	06:12:00 AM	Moon South Dec.: 21.5° S
	10	Mo	12:57:00 PM	Moon Descending Node
	12	We	07:25:00 AM	Moon Apogee: 405200 km
	14	Fr	07:16:00 AM	Geminid Shower: ZHR = 120
	14	Fr	06:21:00 PM	Moon-Mars: 3.9° N
	15	Sa	05:59:00 AM	Mercury Elongation: 21.3° W
	15	Sa	06:49:00 AM	First Quarter
	21	Fr	02:31:00 AM	Moon-Aldebaran: 1.7° S
	21	Fr	02:49:00 PM	Mercury-Jupiter: 0.8° N
	21	Fr	05:22:00 PM	Winter Solstice
	22	Sa	03:03:00 AM	Mercury-Antares: 6° N
	22	Sa	10:08:00 AM	Jupiter-Antares: 5.2° N
	22	Sa	12:49:00 PM	Full Moon
	22	Sa	04:00:00 PM	Ursid Shower: ZHR = 10
	23	Su	06:48:00 AM	Moon North Dec.: 21.6° N
	24	Mo	04:52:00 AM	Moon Perigee: 361100 km
	24	Mo	06:54:00 AM	Moon Ascending Node
	24	Mo	11:52:00 PM	Moon-Beehive: 0.6° N
	26	We	11:06:00 AM	Moon-Regulus: 2.5° S
	29	Sa	04:34:00 AM	Last Quarter

All event times are given for UTC-5:00: Eastern Standard or Daylight Time

Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html

If you go to the above site you can print out a list like the above for the entire year or calendar pages for your time zone.

Sun and Moon Rising and Setting Events

Ephemeris of Sky Events for NMC Observatory
December, 2018 – Local time zone: EST
Date		Sun			Twilight*		Moon			Illum
		Rise	Set	Hours	End	Start	Phase	R/S**	Time	Fractn
Sat	1	07:59a	05:03p	09:04	06:12p	06:49a		Rise	02:38a	29.00%

Sun	2	08:00a	05:03p	09:03	06:12p	06:50a		Rise	03:47a	19.00%
Mon	3	08:01a	05:03p	09:01	06:12p	06:51a		Rise	04:55a	12.00%
Tue	4	08:02a	05:02p	09:00	06:12p	06:52a		Rise	06:02a	6.00%
Wed	5	08:03a	05:02p	08:59	06:12p	06:53a		Rise	07:07a	2.00%
Thu	6	08:04a	05:02p	08:57	06:12p	06:54a		Rise	08:10a	0.00%
Fri	7	08:05a	05:02p	08:56	06:12p	06:55a	New	Set	05:40p	1.00%
Sat	8	08:06a	05:02p	08:55	06:12p	06:56a		Set	06:25p	3.00%

Sun	9	08:07a	05:02p	08:54	06:12p	06:57a		Set	07:15p	7.00%
Mon	10	08:08a	05:02p	08:53	06:12p	06:58a		Set	08:09p	12.00%
Tue	11	08:09a	05:02p	08:52	06:12p	06:59a		Set	09:06p	19.00%
Wed	12	08:10a	05:02p	08:52	06:12p	06:59a		Set	10:05p	27.00%
Thu	13	08:10a	05:02p	08:51	06:12p	07:00a		Set	11:05p	36.00%
Fri	14	08:11a	05:02p	08:50	06:13p	07:01a		Set	12:05a	45.00%
Sat	15	08:12a	05:02p	08:50	06:13p	07:02a	F Qtr	Set	01:07a	55.00%

Sun	16	08:13a	05:03p	08:49	06:13p	07:02a		Set	02:10a	65.00%
Mon	17	08:13a	05:03p	08:49	06:13p	07:03a		Set	03:15a	74.00%
Tue	18	08:14a	05:03p	08:49	06:14p	07:03a		Set	04:23a	83.00%
Wed	19	08:15a	05:04p	08:49	06:14p	07:04a		Set	05:33a	90.00%
Thu	20	08:15a	05:04p	08:48	06:15p	07:05a		Set	06:45a	96.00%
Fri	21	08:16a	05:05p	08:48	06:15p	07:05a		Set	07:56a	99.00%
Sat	22	08:16a	05:05p	08:48	06:16p	07:06a	Full	Rise	05:22p	100.00%

Sun	23	08:17a	05:06p	08:49	06:16p	07:06a		Rise	06:25p	98.00%
Mon	24	08:17a	05:06p	08:49	06:17p	07:07a		Rise	07:35p	93.00%
Tue	25	08:17a	05:07p	08:49	06:17p	07:07a		Rise	08:49p	85.00%
Wed	26	08:18a	05:08p	08:49	06:18p	07:07a		Rise	10:05p	76.00%
Thu	27	08:18a	05:08p	08:50	06:19p	07:08a		Rise	11:18p	66.00%
Fri	28	08:18a	05:09p	08:50	06:19p	07:08a		Rise	12:30a	54.00%
Sat	29	08:19a	05:10p	08:51	06:20p	07:08a	L Qtr	Rise	01:39a	43.00%

Sun	30	08:19a	05:11p	08:51	06:21p	07:08a		Rise	02:47a	33.00%
Mon	31	08:19a	05:12p	08:52	06:22p	07:09a		Rise	03:53a	24.00%

* Nautical Twilight
** Moonrise or moonset, whichever occurs between sunset and sunrise

Categories: Ephemeris Program, Month preview

11/01/2018 – Ephemeris – November preview

November 1, 2018 bobmoler Comments off

Ephemeris for Thursday, November 1st. The Sun will rise at 8:20. It’ll be up for 10 hours and 10 minutes, setting at 6:31. The Moon, 1 day past last quarter, will rise at 2:14 tomorrow morning.

Let’s look ahead at the skies for the month of November. The Sun is still moving south rapidly. Daylight hours in the Interlochen/Traverse City area and will drop from 10 hours and 10 minutes today to 9 hours 5 minutes on the 30th. The altitude, or angle, of the Sun above the southern horizon at local noon will be at 30 degrees today and will descend to 23 and a half degrees on the 30th. The altitude of the Sun in the Straits area will be a degree lower. Local noon, this month, will be about 12:30 p.m. once we’re on standard time. The Leonid meteor shower will reach multiple peaks from the 16th through the 21st and is expected to be lackluster and may only produce 10 to 15 meteors per hour. But the Leonids can be surprising.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

November Evening Star Chart

November Morning Star Chart

Pointer stars at the front of the bowl of the Big Dipper point to Polaris the North Star.
Follow the arc of the handle of the Big Dipper to the star Arcturus
The Summer Triangle is in red.
TauR on the evening star chart can be used as the radiant for the North and South Taurid meteor showers.
LeoR on the morning star chart is the radiant of the Leonid meteor shower which peaks between the 16th to 21st.

Twilight

			Time zone=EDT
	Morning twilight		Evening twilight		Dark night		Moon
Date	Astronomical	Nautical	Nautical	Astronomical	Start	End	Illum.
2018-11-01	6h47m	7h21m	19h39m	20h13m	20h13m	1h02m	0.41
2018-11-02	6h48m	7h22m	19h38m	20h12m	20h12m	2h14m	0.29
2018-11-03	6h49m	7h23m	19h37m	20h11m	20h11m	3h27m	0.19
2018-11-04	5h50m	6h24m	18h36m	19h10m	19h10m	3h39m	0.11
2018-11-05	5h52m	6h26m	18h34m	19h08m	19h08m	4h50m	0.05
2018-11-06	5h53m	6h27m	18h33m	19h07m	19h07m	5h53m	0.01
2018-11-07	5h54m	6h28m	18h32m	19h06m	19h06m	5h54m	0.00
2018-11-08	5h55m	6h29m	18h31m	19h05m	19h05m	5h55m	0.01
2018-11-09	5h56m	6h30m	18h30m	19h04m	19h04m	5h56m	0.05
2018-11-10	5h57m	6h32m	18h29m	19h03m	19h46m	5h57m	0.10
2018-11-11	5h59m	6h33m	18h28m	19h02m	20h33m	5h59m	0.17
2018-11-12	6h00m	6h34m	18h27m	19h01m	21h25m	6h00m	0.26
2018-11-13	6h01m	6h35m	18h26m	19h00m	22h20m	6h01m	0.35
2018-11-14	6h02m	6h36m	18h25m	19h00m	23h18m	6h02m	0.44
2018-11-15	6h03m	6h38m	18h24m	18h59m	–	6h03m	0.54
2018-11-16	6h04m	6h39m	18h24m	18h58m	0h18m	6h04m	0.63
2018-11-17	6h05m	6h40m	18h23m	18h57m	1h19m	6h05m	0.73
2018-11-18	6h07m	6h41m	18h22m	18h57m	2h21m	6h07m	0.81
2018-11-19	6h08m	6h42m	18h21m	18h56m	3h24m	6h08m	0.89
2018-11-20	6h09m	6h43m	18h21m	18h55m	4h30m	6h09m	0.95
2018-11-21	6h10m	6h45m	18h20m	18h55m	5h38m	6h10m	0.99
2018-11-22	6h11m	6h46m	18h19m	18h54m	–	–	0.99
2018-11-23	6h12m	6h47m	18h19m	18h54m	–	–	1.00
2018-11-24	6h13m	6h48m	18h18m	18h53m	–	–	0.99
2018-11-25	6h14m	6h49m	18h18m	18h53m	18h53m	19h38m	0.94
2018-11-26	6h15m	6h50m	18h17m	18h52m	18h52m	20h43m	0.88
2018-11-27	6h16m	6h51m	18h17m	18h52m	18h52m	21h52m	0.79
2018-11-28	6h17m	6h52m	18h16m	18h51m	18h51m	23h05m	0.68
2018-11-29	6h18m	6h53m	18h16m	18h51m	18h51m	–	0.56
2018-11-30	6h19m	6h54m	18h16m	18h51m	18h51m	0h17m	0.44
2018-10-31	6h45m	7h19m	19h40m	20h14m	20h14m	–	0.53

Twilight calendar was generated using Cartes du Ciel (Sky Charts).

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2018/09/27/

NASA Calendar of Planetary Events

			Time
Nov	1	Th		Venus: 10.6° W
	1	Th	11:16:00 PM	Moon-Regulus: 2.1° S
	5	Mo	12:31:00 PM	South Taurid Shower: ZHR = 10
	6	Tu	09:59:00 AM	Mercury Elongation: 23.3° E
	7	We	11:02:00 AM	New Moon
	8	Th	11:56:00 PM	Mercury-Antares: 1.8° N
	11	Su	10:46:00 AM	Moon-Saturn: 1.6° S
	11	Su	09:21:00 PM	Moon South Dec.: 21.4° S
	12	Mo	11:48:00 AM	North Taurid Shower: ZHR = 15
	13	Tu	09:04:00 AM	Moon Descending Node
	14	We	10:57:00 AM	Moon Apogee: 404300 km
	14	We	06:23:00 PM	Venus-Spica: 1.5° S
	15	Th	09:54:00 AM	First Quarter
	15	Th	11:16:00 PM	Moon-Mars: 1.1° N
	17	Sa	06:05:00 PM	Leonid Shower: ZHR = 15
	23	Fr	12:39:00 AM	Full Moon
	23	Fr	04:11:00 PM	Moon-Aldebaran: 1.7° S
	25	Su	08:48:00 PM	Moon North Dec.: 21.5° N
	26	Mo	01:25:00 AM	Jupiter Conjunction
	26	Mo	07:10:00 AM	Moon Perigee: 366600 km
	27	Tu	12:18:00 AM	Moon Ascending Node
	27	Tu	04:10:00 AM	Mercury Inferior Conj.
	27	Tu	03:57:00 PM	Moon-Beehive: 0.8° N
	29	Th	04:27:00 AM	Moon-Regulus: 2.4° S
	29	Th	07:19:00 PM	Last Quarter

All event times are given for UTC-5:00: Eastern Standard or Daylight Time

Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html

If you go to the above site you can print out a list like the above for the entire year
or calendar pages for your time zone.

Sun and Moon Rising and Setting Events

Ephemeris of Sky Events for Interlochen/TC
November 2018 – Local time zone: EDT/EST
Date		Sun			Twilight*		Moon			Illum
		Rise	Set	Hours	End	Start	Phase	R/S**	Time	Fract
Thu	1	08:20a	06:31p	10:11	07:36p	07:15a		Rise	02:14a	35
Fri	2	08:21a	06:29p	10:08	07:34p	07:16a		Rise	03:27a	25
Sat	3	08:22a	06:28p	10:05	07:33p	07:17a		Rise	04:39a	16
* Time Change – EST – Time Change *
Sun	4	07:24a	05:27p	10:02	06:32p	06:19a		Rise	04:50a	9
Mon	5	07:25a	05:25p	10:00	06:31p	06:20a		Rise	06:00a	3
Tue	6	07:27a	05:24p	09:57	06:30p	06:21a		Rise	07:09a	1
Wed	7	07:28a	05:23p	09:55	06:29p	06:22a	New	Set	05:52p	0
Thu	8	07:29a	05:22p	09:52	06:28p	06:23a		Set	06:26p	2
Fri	9	07:31a	05:21p	09:49	06:26p	06:25a		Set	07:03p	6
Sat	10	07:32a	05:19p	09:47	06:25p	06:26a		Set	07:46p	11
Sun	11	07:33a	05:18p	09:44	06:25p	06:27a		Set	08:33p	18
Mon	12	07:35a	05:17p	09:42	06:24p	06:28a		Set	09:25p	26
Tue	13	07:36a	05:16p	09:40	06:23p	06:29a		Set	10:20p	35
Wed	14	07:37a	05:15p	09:37	06:22p	06:31a		Set	11:18p	44
Thu	15	07:39a	05:14p	09:35	06:21p	06:32a	F Qtr	Set	12:18a	54
Fri	16	07:40a	05:13p	09:33	06:20p	06:33a		Set	01:18a	63
Sat	17	07:41a	05:12p	09:30	06:19p	06:34a		Set	02:20a	72
Sun	18	07:43a	05:11p	09:28	06:19p	06:35a		Set	03:24a	80
Mon	19	07:44a	05:10p	09:26	06:18p	06:36a		Set	04:29a	88
Tue	20	07:45a	05:10p	09:24	06:17p	06:38a		Set	05:37a	94
Wed	21	07:47a	05:09p	09:22	06:17p	06:39a		Set	06:47a	98
Thu	22	07:48a	05:08p	09:20	06:16p	06:40a		Set	07:58a	100
Fri	23	07:49a	05:07p	09:18	06:15p	06:41a	Full	Rise	05:55p	99
Sat	24	07:50a	05:07p	09:16	06:15p	06:42a		Rise	06:42p	96
Sun	25	07:52a	05:06p	09:14	06:14p	06:43a		Rise	07:39p	90
Mon	26	07:53a	05:06p	09:12	06:14p	06:44a		Rise	08:43p	82
Tue	27	07:54a	05:05p	09:10	06:14p	06:45a		Rise	09:52p	72
Wed	28	07:55a	05:04p	09:09	06:13p	06:46a		Rise	11:05p	61
Thu	29	07:56a	05:04p	09:07	06:13p	06:47a	L Qtr	Rise	12:17a	50
Fri	30	07:58a	05:04p	09:06	06:13p	06:48a		Rise	01:28a	39
* Nautical Twilight
** Rise or set whichever occurs between sunset and sunrise

Categories: Ephemeris Program, Month preview Tags: November

10/01/2018 – Ephemeris – Previewing October skies

October 1, 2018 bobmoler Comments off

Ephemeris for Monday, October 1st. The Sun will rise at 7:40. It’ll be up for 11 hours and 42 minutes, setting at 7:23. The Moon, 1 day before last quarter, will rise at 11:55 this evening.

Let’s look at the skies for the month of October. The Sun will still be moving south rapidly. Daylight hours in the Interlochen/Traverse City area and will drop from 11 hours and 42 minutes today to 10 hours, 13 minutes at months end. The altitude of the sun above the southern horizon at local noon will be 42 degrees today in the Interlochen area and will descend to 31 degrees on Halloween. Venus will pass the Sun, moving from the evening sky to the morning sky on the 26th. Venus has not been too noticeable in the evening for the last month, but in early November it will seem to suddenly appear in the morning sky. It can be mistaken as a UFO, especially with its tiny Cheshire Cat crescent smile in binoculars or a small telescope.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

October Evening Star Chart

Star Chart for October 2018 (10 p.m. EDT October 15, 2018). Created using my LookingUp program. Click on image to enlarge.

The planets and stars are plotted for the 15th at 9 p.m. EDT in the evening and 6 a.m. for the morning chart. These are the chart times. Note that Traverse City is located approximately 45 minutes behind our time meridian. (An hour 45 minutes behind our daylight saving time meridian during EDT). To duplicate the star positions on a planisphere you may have to set it to 1 hour 45 minutes earlier than the current time.

October Morning Star Chart

Star Chart for October 2018 mornings based on 6 a.m. October 15th. Created using my LookingUp program. Click on image to enlarge.

For a list of constellation names to go with the abbreviations click here.

Pointer stars at the front of the bowl of the Big Dipper point to Polaris the North Star.
Follow the arc of the handle of the Big Dipper to the star Arcturus
The Summer Triangle is in red.
DracR on the evening star chart is the radiant for the Draconid meteor shwer which peaks on the 10th.
OriR on the morning star chart is the radiant of the Orionid meteor shower which peaks on the 21st.

Twilight

			Time zone=EDT
	Morning twilight		Evening twilight		Dark night		Moon
Date	Astronomical	Nautical	Nautical	Astronomical	Start	End	Illum.
2018-10-01	6h08m	6h42m	20h29m	21h03m	21h03m	23h56m	0.61
2018-10-02	6h09m	6h44m	20h27m	21h01m	21h01m	–	0.49
2018-10-03	6h11m	6h45m	20h25m	20h59m	20h59m	0h55m	0.37
2018-10-04	6h12m	6h46m	20h23m	20h57m	20h57m	2h02m	0.26
2018-10-05	6h13m	6h47m	20h22m	20h56m	20h56m	3h14m	0.16
2018-10-06	6h15m	6h49m	20h20m	20h54m	20h54m	4h28m	0.08
2018-10-07	6h16m	6h50m	20h18m	20h52m	20h52m	5h43m	0.03
2018-10-08	6h17m	6h51m	20h16m	20h50m	20h50m	6h17m	0
2018-10-09	6h18m	6h52m	20h14m	20h48m	20h48m	6h18m	0
2018-10-10	6h20m	6h53m	20h13m	20h46m	20h46m	6h20m	0.03
2018-10-11	6h21m	6h55m	20h11m	20h45m	20h56m	6h21m	0.08
2018-10-12	6h22m	6h56m	20h09m	20h43m	21h31m	6h22m	0.15
2018-10-13	6h23m	6h57m	20h07m	20h41m	22h11m	6h23m	0.24
2018-10-14	6h25m	6h58m	20h06m	20h39m	22h55m	6h25m	0.33
2018-10-15	6h26m	7h00m	20h04m	20h38m	23h44m	6h26m	0.43
2018-10-16	6h27m	7h01m	20h02m	20h36m	–	6h27m	0.52
2018-10-17	6h28m	7h02m	20h01m	20h35m	0h37m	6h28m	0.62
2018-10-18	6h30m	7h03m	19h59m	20h33m	1h33m	6h30m	0.71
2018-10-19	6h31m	7h04m	19h58m	20h31m	2h32m	6h31m	0.8
2018-10-20	6h32m	7h06m	19h56m	20h30m	3h32m	6h32m	0.87
2018-10-21	6h33m	7h07m	19h55m	20h28m	4h34m	6h33m	0.93
2018-10-22	6h34m	7h08m	19h53m	20h27m	5h37m	6h34m	0.93
2018-10-23	6h36m	7h09m	19h52m	20h25m	–	–	0.97
2018-10-24	6h37m	7h10m	19h50m	20h24m	–	–	1
2018-10-25	6h38m	7h12m	19h49m	20h22m	–	–	1
2018-10-26	6h39m	7h13m	19h47m	20h21m	–	–	0.97
2018-10-27	6h40m	7h14m	19h46m	20h19m	20h19m	21h01m	0.92
2018-10-28	6h42m	7h15m	19h44m	20h18m	20h18m	21h51m	0.85
2018-10-29	6h43m	7h17m	19h43m	20h17m	20h17m	22h48m	0.75
2018-10-30	6h44m	7h18m	19h42m	20h15m	20h15m	23h53m	0.64
2018-10-31	6h45m	7h19m	19h40m	20h14m	20h14m	–	0.53

Twilight calendar was generated using Cartes du Ciel (Sky Charts).

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2018/09/27/

NASA Calendar of Planetary Events

Oct 01  Mo          Venus: 32.9° E
    02  Tu  5:45 am Last Quarter
    02  Tu  9:03 am Moon North Dec.: 21° N
    03  We 11:10 pm Moon Ascending Node
    04  Th  5:51 am Moon-Beehive: 1.3° N
    05  Fr  5:58 pm Moon-Regulus: 1.9° S
    05  Fr  6:29 pm Moon Perigee: 366400 km
    08  Mo 11:47 pm New Moon
    10  We  8:10 pm Draconid Shower: ZHR = 10
    11  Th  5:21 pm Moon-Jupiter: 4.3° S
    14  Su 11:01 pm Moon-Saturn: 2° S
    15  Mo  1:26 pm Moon South Dec.: 21.2° S
    15  Mo 10:32 pm Mercury-Venus: 6.2° N
    16  Tu  2:02 pm First Quarter
    17  We  8:03 am Moon Descending Node
    17  We  3:16 pm Moon Apogee: 404200 km
    18  Th  9:01 am Moon-Mars: 2.2° S
    21  Su  1:03 pm Orionid Shower: ZHR = 20
    23  Tu  8:43 pm Uranus Opposition
    24  We 12:45 pm Full Moon
    26  Fr 10:13 am Venus Inferior Conjunction with the Sun
    27  Sa  9:04 am Moon-Aldebaran: 1.6° S
    29  Mo  1:28 am Mercury-Jupiter: 3.1° N
    29  Mo  1:34 am Moon North Dec.: 21.3° N
    30  Tu 10:46 pm Moon Ascending Node
    31  We 10:24 am Moon-Beehive: 1° N
    31  We 11:40 am Last Quarter
    31  We  3:05 pm Moon Perigee: 370200 km
Nov 01  Th          Venus: 10.6° W

Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html

If you go to the above site you can print out a list like the above for the entire year
or calendar pages for your time zone.

Sun and Moon Rising and Setting Events

Ephemeris of Sky Events for NMC Observatory
October, 2018 – Local time zone: EDT
Date		Sun			Twilight*		Moon			Illum
		Rise	Set	Hours	End	Start	Phase	R/S**	Time	Fractn
Mon	1	07:40a	07:22p	11:42	08:25p	06:37a		Rise	11:55p	55%
Tue	2	07:41a	07:21p	11:39	08:23p	06:38a	L Qtr	Rise	12:55a	43%
Wed	3	07:42a	07:19p	11:36	08:22p	06:39a		Rise	02:02a	32%
Thu	4	07:44a	07:17p	11:33	08:20p	06:41a		Rise	03:14a	22%
Fri	5	07:45a	07:15p	11:30	08:18p	06:42a		Rise	04:28a	13%
Sat	6	07:46a	07:13p	11:27	08:16p	06:43a		Rise	05:42a	6%

Sun	7	07:47a	07:12p	11:24	08:14p	06:44a		Rise	06:56a	2%
Mon	8	07:48a	07:10p	11:21	08:13p	06:46a	New	Set	07:24p	0%
Tue	9	07:50a	07:08p	11:18	08:11p	06:47a		Set	07:53p	1%
Wed	10	07:51a	07:06p	11:15	08:09p	06:48a		Set	08:23p	4%
Thu	11	07:52a	07:04p	11:12	08:07p	06:49a		Set	08:56p	10%
Fri	12	07:54a	07:03p	11:09	08:06p	06:50a		Set	09:31p	17%
Sat	13	07:55a	07:01p	11:06	08:04p	06:52a		Set	10:11p	25%

Sun	14	07:56a	06:59p	11:03	08:02p	06:53a		Set	10:55p	34%
Mon	15	07:57a	06:57p	11:00	08:01p	06:54a		Set	11:43p	43%
Tue	16	07:59a	06:56p	10:57	07:59p	06:55a	F Qtr	Set	12:36a	52%
Wed	17	08:00a	06:54p	10:54	07:57p	06:57a		Set	01:33a	62%
Thu	18	08:01a	06:52p	10:51	07:56p	06:58a		Set	02:31a	71%
Fri	19	08:02a	06:51p	10:48	07:54p	06:59a		Set	03:32a	79%
Sat	20	08:04a	06:49p	10:45	07:53p	07:00a		Set	04:34a	86%

Sun	21	08:05a	06:47p	10:42	07:51p	07:01a		Set	05:37a	92%
Mon	22	08:06a	06:46p	10:39	07:49p	07:03a		Set	06:41a	97%
Tue	23	08:08a	06:44p	10:36	07:48p	07:04a		Set	07:48a	99%
Wed	24	08:09a	06:43p	10:33	07:46p	07:05a	Full	Rise	07:13p	100%
Thu	25	08:10a	06:41p	10:30	07:45p	07:06a		Rise	07:44p	98%
Fri	26	08:12a	06:40p	10:27	07:44p	07:08a		Rise	08:19p	94%
Sat	27	08:13a	06:38p	10:25	07:42p	07:09a		Rise	09:01p	87%

Sun	28	08:14a	06:37p	10:22	07:41p	07:10a		Rise	09:51p	79%
Mon	29	08:16a	06:35p	10:19	07:40p	07:11a		Rise	10:48p	69%
Tue	30	08:17a	06:34p	10:16	07:38p	07:12a		Rise	11:53p	58%
Wed	31	08:18a	06:32p	10:13	07:37p	07:14a	L Qtr	Rise	01:02a	47%
* Nautical Twilight
** Moonrise or moonset, whichever occurs between sunset and sunrise

Categories: Ephemeris Link, Ephemeris Program, Month preview

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Addendum

July Evening Star Chart

July Morning Star Chart

Twilight Limits, Nautical and Astronomical

NASA Calendar of Planetary Events

Sun and Moon Rising and Setting Events

Addendum

June Evening Star Chart

June Morning Star Chart

Twilight Limits, Nautical and Astronomical

NASA Calendar of Planetary Events

Sun and Moon Rising and Setting Events

Addendum

May Evening Star Chart

May Morning Star Chart

Twilight Limits, Nautical and Astronomical

NASA Calendar of Planetary Events

Sun and Moon Rising and Setting Events

Addendum

April Evening Star Chart

April Morning Star Chart

Twilight Limits, Nautical and Astronomical

0.18

NASA Calendar of Planetary Events

Sun and Moon Rising and Setting Events

Ephemeris of Sky Events for NMC Observatory

Addenda

March Evening Star Chart

March Morning Star Chart

Twilight Limits, Nautical and Astronomical

NASA Calendar of Planetary Events

Sun and Moon Rising and Setting Events

Addenda

February Evening Star Chart

February Morning Star Chart

Twilight Limits, Nautical and Astronomical

NASA Calendar of Planetary Events

Sun and Moon Rising and Setting Events

Ephemeris of Sky Events for Interlochen/TC

Addenda

January Evening Star Chart

January Morning Star Chart

Twilight

NASA Calendar of Planetary Events

Sun and Moon Rising and Setting Events

Addenda

December Evening Star Chart

December Morning Star Chart

Twilight

NASA Calendar of Planetary Events

Sun and Moon Rising and Setting Events

Addendum

November Evening Star Chart

November Morning Star Chart

Twilight

NASA Calendar of Planetary Events

Sun and Moon Rising and Setting Events

Addendum

October Evening Star Chart

October Morning Star Chart

Twilight

NASA Calendar of Planetary Events

Sun and Moon Rising and Setting Events

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