Bob Moler's Ephemeris Blog

This is Ephemeris for Tuesday, 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, 1 day past new, will set at 10:56 this evening.

Let’s preview June skies. There will be a lot of sun in June and very little night. The daylight hours will increase a bit from 15 hours and 21 minutes Tomorrow to 15 hours and 34 minutes on the 21st, retreating back to 15 hours 31 minutes at month’s end. The altitude of the Sun above the southern horizon at local noon will hover around 68 to 69 degrees. Local noon, when the Sun is actually due south, will occur at about 1:43 p.m. Summer begins on the 21st at 5:14 am, when the Sun reaches its farthest north. The actual amount of nighttime will be quite short, mostly due to the length of daylight, but also because twilight lasts much longer than average because the Sun sets at a shallow angle. On the 21st, there’s theoretically only 3 ½ hours of total darkness if the Moon wasn’t up.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan (EDT, UT – 4 hours). They may be different for your location.

Addendum

June Evening Star Chart

Star Chart for June 2022 (11 p.m. EDT June 15, 2022). 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 Interlochen/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 11 p.m. and 4 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, or 28 minutes. 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 for weekly positions.

June Morning Star Chart

Star Chart for June mornings, 2022 (4 am EDT, June 15, 2022). 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,

Twilight Limits, Nautical and Astronomical

The twilight calendar was generated using Cartes du Ciel (Sky Charts), with some corrections.

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

Jun  1  We            Venus: 36.5° W
     1  We   6:32 pm  Moon North Dec.: 26.9° N
     1  We   9:14 pm  Moon Apogee: 406,200 km
     3  Fr   1:42 am  Moon-Pollux: 2.4° N
     4  Sa   3:17 am  Moon-Beehive: 4° S
     7  Tu  10:48 am  First Quarter
    12  Su   6:02 am  Moon Descending Node
    14  Tu   7:52 am  Full Strawberry Moon (Super Moon)
    14  Tu   7:21 pm  Moon Perigee: 357,400 km
    15  We   6:59 am  Moon South Dec.: 26.9° S
    16  Th  10:59 am  Mercury Elongation: 23.2° W
    18  Sa   8:22 am  Moon-Saturn: 4.3° N
    20  Mo  11:11 pm  Last Quarter
    21  Tu   5:14 am  Summer Solstice
    21  Tu   9:31 am  Moon-Jupiter: 2.9° N
    22  We   2:05 pm  Mercury-Aldebaran: 2.9° N
    22  We   2:16 pm  Moon-Mars: 1° N
    22  We   8:53 pm  Venus-Pleiades: 5.7° S
    25  Sa   3:10 am  Moon Ascending Node
    25  Sa   5:27 pm  Moon-Pleiades: 3.9° N
    26  Su   4:11 am  Moon-Venus: 3° S
    28  Tu  10:52 pm  New Moon
    29  We  12:06 am  Moon North Dec.: 26.9° N
    29  We   2:08 am  Moon Apogee: 406,600 km
    30  Th  10:45 pm  Venus-Aldebaran: 4.1° N
Jul  1  Fr            Venus: 29.6° W

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

Sun and Moon Rising and Setting Events

LU                  Ephemeris of Sky Events for Interlochen/TC
June, 2022    Local time zone: EDT
+-----------------------------------------------------------------------+
| DATE |  SUN     SUN  DAYLIGHT|   TWILIGHT*    |MOON  RISE OR    ILLUM |
|      |  RISE    SET    HOURS |  END    START  |PHASE SET** TIME FRACTN|
+=======================================================================+
|Wed  1| 06:00a  09:21p  15:21 | 10:44p  04:37a |      Set  11:49p    6%|
|Thu  2| 05:59a  09:22p  15:22 | 10:45p  04:36a |      Set  12:34a   11%|
|Fri  3| 05:59a  09:23p  15:23 | 10:46p  04:35a |      Set  01:11a   17%|
|Sat  4| 05:58a  09:23p  15:24 | 10:47p  04:35a |      Set  01:41a   25%|
+------+-----------------------+----------------+-----------------------+
|Sun  5| 05:58a  09:24p  15:26 | 10:48p  04:34a |      Set  02:06a   34%|
|Mon  6| 05:58a  09:25p  15:27 | 10:49p  04:33a |      Set  02:28a   44%|
|Tue  7| 05:57a  09:25p  15:28 | 10:50p  04:33a |F Qtr Set  02:49a   54%|
|Wed  8| 05:57a  09:26p  15:29 | 10:51p  04:32a |      Set  03:08a   64%|
|Thu  9| 05:57a  09:27p  15:29 | 10:52p  04:32a |      Set  03:29a   74%|
|Fri 10| 05:57a  09:27p  15:30 | 10:53p  04:31a |      Set  03:52a   83%|
|Sat 11| 05:56a  09:28p  15:31 | 10:53p  04:31a |      Set  04:19a   91%|
+------+-----------------------+----------------+-----------------------+
|Sun 12| 05:56a  09:28p  15:32 | 10:54p  04:31a |      Set  04:54a   97%|
|Mon 13| 05:56a  09:29p  15:32 | 10:55p  04:30a |      Set  05:41a  100%|
|Tue 14| 05:56a  09:29p  15:33 | 10:55p  04:30a |Full  Rise 10:22p  100%|
|Wed 15| 05:56a  09:30p  15:33 | 10:56p  04:30a |      Rise 11:27p   96%|
|Thu 16| 05:56a  09:30p  15:34 | 10:56p  04:30a |      Rise 12:17a   91%|
|Fri 17| 05:56a  09:30p  15:34 | 10:57p  04:30a |      Rise 12:55a   82%|
|Sat 18| 05:56a  09:31p  15:34 | 10:57p  04:30a |      Rise 01:25a   73%|
+------+-----------------------+----------------+-----------------------+
|Sun 19| 05:56a  09:31p  15:34 | 10:57p  04:30a |      Rise 01:49a   62%|
|Mon 20| 05:57a  09:31p  15:34 | 10:58p  04:30a |L Qtr Rise 02:09a   51%|
|Tue 21| 05:57a  09:32p  15:34 | 10:58p  04:30a |      Rise 02:28a   41%|
|Wed 22| 05:57a  09:32p  15:34 | 10:58p  04:31a |      Rise 02:48a   31%|
|Thu 23| 05:57a  09:32p  15:34 | 10:58p  04:31a |      Rise 03:08a   22%|
|Fri 24| 05:58a  09:32p  15:34 | 10:58p  04:31a |      Rise 03:31a   15%|
|Sat 25| 05:58a  09:32p  15:34 | 10:58p  04:32a |      Rise 03:59a    9%|
+------+-----------------------+----------------+-----------------------+
|Sun 26| 05:58a  09:32p  15:33 | 10:58p  04:32a |      Rise 04:32a    4%|
|Mon 27| 05:59a  09:32p  15:33 | 10:58p  04:33a |      Rise 05:13a    1%|
|Tue 28| 05:59a  09:32p  15:32 | 10:58p  04:33a |New   Set  09:44p    0%|
|Wed 29| 06:00a  09:32p  15:32 | 10:58p  04:34a |      Set  10:32p    1%|
|Thu 30| 06:00a  09:32p  15:31 | 10:57p  04:34a |      Set  11:11p    3%|
+-----------------------------------------------------------------------+
* Nautical Twilight
** Moonrise or moonset, whichever occurs between sunrise and sunset

Generated using my LookingUp for DOS program.