Bob Moler's Ephemeris Blog

This is Ephemeris for Halloween, Friday, October 31st. Today the Sun will be up for 10 hours and 12 minutes, setting at 6:32, and it will rise tomorrow at 8:21. The Moon, 2 days past first quarter, will set at 3:17 tomorrow morning.

Let’s look ahead at the skies for the month of November. The Sun is still moving south rapidly at the beginning of the month, but will slow down toward the end. Daylight hours in the Interlochen/Traverse City area and will drop from 10 hours and 9 minutes tomorrow to 9 hours 4 minutes on the 30th. The altitude, or angle, of the Sun above the southern horizon at local noon will be at 30 degrees tomorrow 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, next month, is about 12:30 p.m. This Sunday we fall back one hour to Standard Time, making our mornings a bit lighter, and our early evenings a bit darker.

The astronomical event times given in this blog are for the Traverse City/Interlochen area of Michigan (Lat 44.7° N, Long 85.7° W; EDT, UT – 4 hours) unless stated otherwise. Times will be different for other locations.

Addendum

November Evening Star Chart

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, 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 45 minutes earlier than the current time.

November Morning Star Chart

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.
• TauR in the evening star chart can be used as the radiant for the North and South Taurid meteor showers. For dates see NASA Calendar of Planetary Events below
• LeoR in the morning star chart is the radiant of the Leonid meteor shower, which peaks on the morning of the 17th.

Twilight Limits, Nautical and Astronomical

			EDT
	Morning	Twilight	Evening	Twilight	Dark	Night	Moon
Date	Astro.	Nautical	Nautical	Astro.	Start	End	Illum.
2025-11-01	6h44m	7h17m	19h35m	20h13m	3h18m	6h44m	0.85
			EST
2025-11-02	5h45m	6h19m	18h34m	19h12m	3h34m	5h45m	0.92
2025-11-03	5h46m	6h20m	18h33m	19h11m	4h53m	5h46m	0.97
2025-11-04	5h47m	6h21m	18h32m	19h09m	–	–	1.00
2025-11-05	5h48m	6h22m	18h30m	19h08m	–	–	0.99
2025-11-06	5h49m	6h23m	18h29m	19h07m	–	–	0.96
2025-11-07	5h51m	6h25m	18h28m	19h06m	–	–	0.90
2025-11-08	5h52m	6h26m	18h27m	19h05m	19h05m	19h49m	0.81
2025-11-09	5h53m	6h27m	18h26m	19h04m	19h04m	21h05m	0.72
2025-11-10	5h54m	6h28m	18h25m	19h03m	19h03m	22h22m	0.61
2025-11-11	5h55m	6h29m	18h24m	19h02m	19h02m	23h37m	0.50
2025-11-12	5h56m	6h31m	18h23m	19h01m	19h01m	–	0.40
2025-11-13	5h58m	6h32m	18h22m	19h01m	19h01m	0h49m	0.30
2025-11-14	5h59m	6h33m	18h21m	18h56m	18h56m	1h57m	0.22
2025-11-15	6h00m	6h34m	18h21m	18h55m	18h55m	3h02m	0.14
2025-11-16	6h01m	6h35m	18h20m	18h54m	18h54m	4h07m	0.08
2025-11-17	6h02m	6h37m	18h19m	18h53m	18h53m	5h11m	0.04
2025-11-18	6h03m	6h38m	18h18m	18h53m	18h53m	6h03m	0.01
2025-11-19	6h04m	6h39m	18h18m	18h52m	18h52m	6h04m	0.00
2025-11-20	6h05m	6h40m	18h17m	18h51m	18h51m	6h05m	0.01
2025-11-21	6h07m	6h41m	18h16m	18h51m	18h51m	6h07m	0.03
2025-11-22	6h08m	6h42m	18h16m	18h50m	18h50m	6h08m	0.08
2025-11-23	6h09m	6h43m	18h15m	18h50m	19h24m	6h09m	0.13
2025-11-24	6h10m	6h45m	18h15m	18h49m	20h30m	6h10m	0.21
2025-11-25	6h11m	6h46m	18h14m	18h49m	21h39m	6h11m	0.29
2025-11-26	6h12m	6h47m	18h14m	18h49m	22h49m	6h12m	0.39
2025-11-27	6h13m	6h48m	18h13m	18h48m	–	6h13m	0.49
2025-11-28	6h14m	6h49m	18h13m	18h48m	0h00m	6h14m	0.60
2025-11-29	6h15m	6h50m	18h13m	18h48m	1h13m	6h15m	0.71
2025-11-30	6h16m	6h51m	18h12m	18h47m	2h27m	6h16m	0.80

 

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

Nov  1  Sa            Venus: 16.2° W
     1  Sa  12:46 PM  Moon Ascending Node
     1  Sa   8:04 PM  Venus-Spica: 3.5° N
     2  Su   5:46 AM  Moon-Saturn: 3.7° S
     5  We   7:36 AM  South Taurid Shower: ZHR = 10
     5  We   8:19 AM  Full Moon, so-called Super Moon
     5  We   5:29 PM  Moon Perigee: 356800 km
     6  Th  10:26 AM  Moon-Pleiades: 0.8° S
     8  Sa   6:41 AM  Moon North Dec.: 28.4° N
     8  Sa   9:45 PM  Mercury-Antares: 3.6° N
    10  Mo   1:40 AM  Moon-Pollux: 2.7° N
    10  Mo   2:56 AM  Moon-Jupiter: 4° S
    11  Tu  12:27 AM  Moon-Beehive: 1.8° S
    12  We  12:28 AM  Last Quarter
    12  We   6:52 AM  North Taurid Shower: ZHR = 15
    12  We   5:51 PM  Moon-Regulus: 1.1° S
    12  We  10:41 PM  Mercury-Mars: 1.2° N
    14  Fr   1:38 AM  Moon Descending Node
    17  Mo   5:11 AM  Moon-Spica: 1.3° N
    17  Mo   1:10 PM  Leonid Shower: ZHR = 15
    19  We   9:48 PM  Moon Apogee: 406700 km
    20  Th   1:47 AM  New Moon
    20  Th   4:20 AM  Mercury Inferior Conj.
    21  Fr   7:33 AM  Uranus Opposition
    22  Sa   1:12 PM  Moon South Dec.: 28.3° S
    28  Fr   1:59 AM  First Quarter
    28  Fr   4:33 PM  Moon Ascending Node
    29  Sa   2:08 PM  Moon-Saturn: 3.8° S
Dec  1  Mo            Venus: 8.7° W

All event times for November 1 & 2 are given for UTC-4 Eastern Daylight Saving Time. For dates after that, times are given for UTC-5 Eastern Standard 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 Times

LU                  Ephemeris of Sky Events for Interlochen/TC
November, 2025    Local time zone: EDT
+-----------------------------------------------------------------------+
| DATE |  SUN     SUN  DAYLIGHT|   TWILIGHT*    |MOON  RISE OR    ILLUM |
|      |  RISE    SET    HOURS |  END    START  |PHASE SET** TIME FRACTN|
+=======================================================================+
|Sat  1| 08:21a  06:30p  10:09 | 07:35p  07:16a |      Set  04:33a   83%|
+------+-----------------------+----------------+-----------------------+
| EST  |      Time Change      |                |                       |
|Sun  2| 07:22a  05:29p  10:07 | 06:34p  06:17a |      Set  04:52a   91%|
|Mon  3| 07:23a  05:28p  10:04 | 06:33p  06:18a |      Set  06:15a   96%|
|Tue  4| 07:25a  05:26p  10:01 | 06:32p  06:19a |      Set  07:41a   99%|
|Wed  5| 07:26a  05:25p  09:59 | 06:31p  06:21a |Full  Rise 05:10p  100%|
|Thu  6| 07:28a  05:24p  09:56 | 06:30p  06:22a |      Rise 05:50p   97%|
|Fri  7| 07:29a  05:23p  09:53 | 06:28p  06:23a |      Rise 06:43p   91%|
|Sat  8| 07:30a  05:21p  09:51 | 06:27p  06:24a |      Rise 07:49p   83%|
+------+-----------------------+----------------+-----------------------+
|Sun  9| 07:32a  05:20p  09:48 | 06:26p  06:25a |      Rise 09:04p   73%|
|Mon 10| 07:33a  05:19p  09:46 | 06:25p  06:27a |      Rise 10:22p   63%|
|Tue 11| 07:34a  05:18p  09:43 | 06:24p  06:28a |      Rise 11:37p   52%|
|Wed 12| 07:36a  05:17p  09:41 | 06:23p  06:29a |L Qtr Rise 12:48a   42%|
|Thu 13| 07:37a  05:16p  09:38 | 06:23p  06:30a |      Rise 01:56a   32%|
|Fri 14| 07:38a  05:15p  09:36 | 06:22p  06:31a |      Rise 03:02a   23%|
|Sat 15| 07:40a  05:14p  09:34 | 06:21p  06:33a |      Rise 04:06a   16%|
+------+-----------------------+----------------+-----------------------+
|Sun 16| 07:41a  05:13p  09:31 | 06:20p  06:34a |      Rise 05:11a    9%|
|Mon 17| 07:42a  05:12p  09:29 | 06:19p  06:35a |      Rise 06:16a    5%|
|Tue 18| 07:44a  05:11p  09:27 | 06:19p  06:36a |      Rise 07:22a    2%|
|Wed 19| 07:45a  05:10p  09:25 | 06:18p  06:37a |      Rise 08:28a    0%|
|Thu 20| 07:46a  05:09p  09:23 | 06:17p  06:38a |New   Set  04:56p    1%|
|Fri 21| 07:48a  05:09p  09:21 | 06:17p  06:40a |      Set  05:36p    3%|
|Sat 22| 07:49a  05:08p  09:18 | 06:16p  06:41a |      Set  06:26p    7%|
+------+-----------------------+----------------+-----------------------+
|Sun 23| 07:50a  05:07p  09:17 | 06:15p  06:42a |      Set  07:24p   12%|
|Mon 24| 07:51a  05:07p  09:15 | 06:15p  06:43a |      Set  08:29p   19%|
|Tue 25| 07:53a  05:06p  09:13 | 06:14p  06:44a |      Set  09:38p   27%|
|Wed 26| 07:54a  05:05p  09:11 | 06:14p  06:45a |      Set  10:49p   37%|
|Thu 27| 07:55a  05:05p  09:09 | 06:14p  06:46a |      Set  12:00a   47%|
|Fri 28| 07:56a  05:04p  09:08 | 06:13p  06:47a |F Qtr Set  01:12a   58%|
|Sat 29| 07:57a  05:04p  09:06 | 06:13p  06:48a |      Set  02:26a   68%|
+------+-----------------------+----------------+-----------------------+
|Sun 30| 07:59a  05:03p  09:04 | 06:13p  06:49a |      Set  03:44a   78%|
+-----------------------------------------------------------------------+
* Nautical Twilight
** Moonrise or moonset, whichever occurs between sunset and sunrise

Generated using my LookingUp for DOS app.