December 2025 (Gregorian)

Twilight and Astronomy Information

Greenwich Observatory, UK: 51.4778°N, 0°E, elevation 46.9m, time zone UT (Standard Time)

Date	Start of Twilight			Sun Rise	Rise Az °	Mid Day	° Sun Long	EoT	Day Span	Day Hour	Set Az °	Sun Set	° Moon Phase	End of Twilight			Mid- Night	Night Span	Night Hour	Moon Rise	° Rise Phase	Moon Set	° Set Phase
	Astro	Sea	Civil											Civil	Sea	Astro
1 Mon	05:42	06:22	07:04	07:42	126.7	11:49	249.5	+10.9	08:15	0:41	233.2	15:56	133.4	16:34	17:16	17:56	23:49	15:47	1:19	13:36	132.0	02:52	126.0
2 Tue	05:43	06:23	07:06	07:43	127.0	11:50	250.6	+10.5	08:13	0:41	232.9	15:56	147.2	16:33	17:15	17:56	23:50	15:49	1:19	13:54	146.0	04:22	140.5
3 Wed	05:44	06:24	07:07	07:44	127.2	11:50	251.6	+10.1	08:11	0:41	232.7	15:55	161.3	16:33	17:15	17:55	23:50	15:50	1:19	14:17	160.4	05:56	155.4
4 Thu	05:45	06:26	07:08	07:46	127.5	11:50	252.6	+9.7	08:09	0:41	232.4	15:55	175.6	16:32	17:15	17:55	23:51	15:52	1:19	14:53	175.0	07:32	170.6
5 Fri	05:46	06:27	07:09	07:47	127.7	11:51	253.6	+9.3	08:07	0:41	232.2	15:54	189.9	16:32	17:14	17:55	23:51	15:54	1:19	15:45	189.8	08:59	185.8
6 Sat	05:47	06:28	07:10	07:48	128.0	11:51	254.6	+8.9	08:06	0:40	232.0	15:54	204.0	16:32	17:14	17:55	23:51	15:55	1:20	16:57	204.6	10:07	200.6
7 Sun	05:48	06:29	07:11	07:49	128.2	11:52	255.6	+8.4	08:04	0:40	231.8	15:54	217.7	16:31	17:14	17:55	23:52	15:57	1:20	18:23	219.1	10:53	214.9
8 Mon	05:49	06:30	07:13	07:50	128.4	11:52	256.6	+8.0	08:03	0:40	231.6	15:53	230.9	16:31	17:14	17:54	23:52	15:58	1:20	19:52	233.0	11:24	228.5
9 Tue	05:50	06:31	07:14	07:52	128.6	11:52	257.7	+7.5	08:02	0:40	231.4	15:53	243.6	16:31	17:14	17:54	23:53	16:00	1:20	21:17	246.4	11:44	241.4
10 Wed	05:51	06:32	07:15	07:53	128.7	11:53	258.7	+7.1	08:00	0:40	231.2	15:53	255.8	16:31	17:14	17:54	23:53	16:01	1:20	22:37	259.2	11:59	253.9
11 Thu	05:52	06:33	07:16	07:54	128.9	11:53	259.7	+6.6	07:59	0:40	231.1	15:53	267.6	16:31	17:14	17:55	23:54	16:02	1:20	23:52	271.4	12:11	265.8
12 Fri	05:53	06:34	07:16	07:55	129.0	11:54	260.7	+6.2	07:58	0:40	230.9	15:53	279.0	16:31	17:14	17:55	23:54	16:03	1:20	never		12:22	277.4
13 Sat	05:54	06:34	07:17	07:56	129.2	11:54	261.7	+5.7	07:57	0:40	230.8	15:53	290.2	16:31	17:14	17:55	23:55	16:04	1:20	01:05	283.3	12:32	288.6
14 Sun	05:54	06:35	07:18	07:56	129.3	11:55	262.7	+5.2	07:56	0:40	230.7	15:53	301.2	16:31	17:14	17:55	23:55	16:04	1:20	02:16	295.0	12:43	299.7
15 Mon	05:55	06:36	07:19	07:57	129.4	11:55	263.8	+4.7	07:56	0:40	230.6	15:53	312.0	16:31	17:14	17:55	23:55	16:05	1:20	03:28	306.4	12:56	310.7
16 Tue	05:56	06:37	07:20	07:58	129.5	11:56	264.8	+4.3	07:55	0:40	230.5	15:53	322.8	16:32	17:15	17:55	23:56	16:06	1:20	04:41	317.8	13:12	321.6
17 Wed	05:57	06:37	07:20	07:59	129.5	11:56	265.8	+3.8	07:55	0:40	230.4	15:54	333.7	16:32	17:15	17:56	23:56	16:06	1:21	05:54	329.2	13:34	332.6
18 Thu	05:57	06:38	07:21	08:00	129.6	11:57	266.8	+3.3	07:54	0:40	230.4	15:54	344.5	16:32	17:15	17:56	23:57	16:06	1:21	07:04	340.5	14:03	343.7
19 Fri	05:58	06:39	07:22	08:00	129.6	11:57	267.8	+2.8	07:54	0:39	230.3	15:54	355.5	16:33	17:16	17:57	23:57	16:07	1:21	08:09	351.9	14:44	355.0
20 Sat	05:58	06:39	07:22	08:01	129.7	11:58	268.9	+2.3	07:54	0:39	230.3	15:55	6.5	16:33	17:16	17:57	23:58	16:07	1:21	09:02	3.4	15:39	6.4
21 Sun	05:59	06:40	07:23	08:01	129.7	11:58	269.9	+1.8	07:54	0:39	230.3	15:55	17.7	16:33	17:17	17:57	23:58	16:07	1:21	09:43	14.8	16:45	18.1
22 Mon	05:59	06:40	07:23	08:02	129.7	11:59	270.9	+1.3	07:54	0:39	230.3	15:56	29.0	16:34	17:17	17:58	23:59	16:07	1:21	10:13	26.3	18:00	30.0
23 Tue	06:00	06:41	07:24	08:02	129.7	11:59	271.9	+0.8	07:54	0:39	230.3	15:56	40.4	16:35	17:18	17:59	23:59	16:06	1:21	10:35	37.8	19:17	42.0
24 Wed	06:00	06:41	07:24	08:03	129.6	12:00	272.9	+0.3	07:54	0:40	230.4	15:57	52.0	16:35	17:18	17:59	00:00	16:06	1:21	10:51	49.5	20:35	54.3
25 Thu	06:01	06:41	07:25	08:03	129.6	12:00	273.9	-0.2	07:55	0:40	230.4	15:57	63.8	16:36	17:19	18:00	00:00	16:06	1:20	11:05	61.4	21:53	66.8
26 Fri	06:01	06:42	07:25	08:03	129.5	12:01	275.0	-0.7	07:55	0:40	230.5	15:58	75.9	16:37	17:20	18:00	00:01	16:05	1:20	11:17	73.5	23:12	79.6
27 Sat	06:01	06:42	07:25	08:03	129.4	12:01	276.0	-1.2	07:56	0:40	230.6	15:59	88.3	16:37	17:20	18:01	00:01	16:05	1:20	11:28	86.0	never
28 Sun	06:02	06:42	07:25	08:04	129.3	12:02	277.0	-1.7	07:56	0:40	230.7	16:00	101.1	16:38	17:21	18:02	00:02	16:04	1:20	11:41	98.8	00:32	92.8
29 Mon	06:02	06:42	07:25	08:04	129.2	12:02	278.0	-2.1	07:57	0:40	230.8	16:01	114.2	16:39	17:22	18:03	00:02	16:03	1:20	11:56	112.0	01:56	106.5
30 Tue	06:02	06:43	07:26	08:04	129.1	12:03	279.0	-2.6	07:58	0:40	230.9	16:02	127.7	16:40	17:23	18:04	00:03	16:02	1:20	12:15	125.6	03:25	120.6
31 Wed	06:02	06:43	07:26	08:04	129.0	12:03	280.1	-3.1	07:59	0:40	231.1	16:03	141.5	16:41	17:24	18:04	00:03	16:01	1:20	12:44	139.6	04:58	135.1

° Solar Longitude [Sun Long] and Equation of Time [EoT, in minutes] are as of Mid Day = Local Apparent Noon.
° Sunrise/Sunset Azimuth [Rise/Set Az] measured clockwise from true north with center of Sun at horizon (east = 90°, west = 270°). Moon Phase at Sunset.

Note Twilight Solar Depressions: Civil = 6° (see brightest stars, aviation end or start of night, then artificial lights for outdoor activities),
Nautical [Sea] = 12° (horizon no longer visible at sea), Astronomical [Astro] = 18° (minimal atmospheric scatter of sunlight).

Generated by Kalendis 11.167(1697)-Tu <http://individual.utoronto.ca/kalendis/>