December 2023 (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 Fri	05:41	06:22	07:04	07:41	126.6	11:49	249.0	+11.1	08:16	0:41	233.4	15:57	230.8	16:34	17:16	17:56	23:49	15:46	1:19	19:19	232.4	11:51	228.9
2 Sat	05:42	06:23	07:05	07:42	126.8	11:49	250.0	+10.7	08:14	0:41	233.1	15:56	241.9	16:33	17:16	17:56	23:50	15:48	1:19	20:33	244.1	12:16	240.2
3 Sun	05:44	06:24	07:06	07:44	127.1	11:50	251.0	+10.3	08:12	0:41	232.8	15:55	252.9	16:33	17:15	17:55	23:50	15:50	1:19	21:46	255.5	12:34	251.4
4 Mon	05:45	06:25	07:07	07:45	127.4	11:50	252.1	+9.9	08:10	0:41	232.5	15:55	263.7	16:32	17:15	17:55	23:50	15:51	1:19	22:58	266.9	12:48	262.3
5 Tue	05:46	06:26	07:09	07:46	127.6	11:51	253.1	+9.5	08:08	0:41	232.3	15:54	274.5	16:32	17:15	17:55	23:51	15:53	1:19	never		13:00	273.2
6 Wed	05:47	06:27	07:10	07:48	127.8	11:51	254.1	+9.1	08:07	0:41	232.1	15:54	285.4	16:32	17:14	17:55	23:51	15:55	1:20	00:08	278.3	13:10	284.2
7 Thu	05:48	06:28	07:11	07:49	128.1	11:51	255.1	+8.7	08:05	0:40	231.9	15:54	296.4	16:32	17:14	17:55	23:52	15:56	1:20	01:18	289.7	13:20	295.2
8 Fri	05:49	06:29	07:12	07:50	128.3	11:52	256.1	+8.2	08:04	0:40	231.7	15:53	307.6	16:31	17:14	17:55	23:52	15:58	1:20	02:29	301.3	13:30	306.5
9 Sat	05:50	06:30	07:13	07:51	128.5	11:52	257.1	+7.8	08:02	0:40	231.5	15:53	319.2	16:31	17:14	17:54	23:52	15:59	1:20	03:44	313.3	13:43	318.1
10 Sun	05:51	06:31	07:14	07:52	128.7	11:53	258.1	+7.3	08:01	0:40	231.3	15:53	331.0	16:31	17:14	17:54	23:53	16:00	1:20	05:02	325.6	13:59	330.1
11 Mon	05:52	06:32	07:15	07:53	128.8	11:53	259.2	+6.9	08:00	0:40	231.1	15:53	343.3	16:31	17:14	17:55	23:53	16:01	1:20	06:24	338.4	14:21	342.5
12 Tue	05:52	06:33	07:16	07:54	129.0	11:54	260.2	+6.4	07:59	0:40	231.0	15:53	355.9	16:31	17:14	17:55	23:54	16:02	1:20	07:47	351.6	14:54	355.4
13 Wed	05:53	06:34	07:17	07:55	129.1	11:54	261.2	+5.9	07:58	0:40	230.8	15:53	8.8	16:31	17:14	17:55	23:54	16:03	1:20	09:04	5.1	15:42	8.7
14 Thu	05:54	06:35	07:18	07:56	129.2	11:55	262.2	+5.5	07:57	0:40	230.7	15:53	22.0	16:31	17:14	17:55	23:55	16:04	1:20	10:07	18.8	16:49	22.5
15 Fri	05:55	06:36	07:19	07:57	129.3	11:55	263.2	+5.0	07:56	0:40	230.6	15:53	35.4	16:31	17:14	17:55	23:55	16:05	1:20	10:52	32.6	18:12	36.7
16 Sat	05:56	06:36	07:19	07:58	129.4	11:55	264.3	+4.5	07:55	0:40	230.5	15:53	48.8	16:31	17:15	17:55	23:56	16:05	1:20	11:23	46.3	19:42	50.9
17 Sun	05:56	06:37	07:20	07:58	129.5	11:56	265.3	+4.0	07:55	0:40	230.5	15:53	62.1	16:32	17:15	17:56	23:56	16:06	1:20	11:45	59.8	21:12	65.1
18 Mon	05:57	06:38	07:21	07:59	129.6	11:56	266.3	+3.5	07:54	0:40	230.4	15:54	75.4	16:32	17:15	17:56	23:57	16:06	1:21	12:01	73.3	22:40	79.1
19 Tue	05:58	06:38	07:21	08:00	129.6	11:57	267.3	+3.0	07:54	0:40	230.4	15:54	88.5	16:32	17:16	17:56	23:57	16:07	1:21	12:15	86.5	never
20 Wed	05:58	06:39	07:22	08:01	129.7	11:57	268.3	+2.5	07:54	0:39	230.3	15:54	101.5	16:33	17:16	17:57	23:58	16:07	1:21	12:27	99.6	00:04	92.9
21 Thu	05:59	06:39	07:23	08:01	129.7	11:58	269.3	+2.1	07:54	0:39	230.3	15:55	114.3	16:33	17:16	17:57	23:58	16:07	1:21	12:40	112.5	01:27	106.6
22 Fri	05:59	06:40	07:23	08:02	129.7	11:58	270.4	+1.6	07:54	0:39	230.3	15:55	126.9	16:34	17:17	17:58	23:59	16:07	1:21	12:54	125.3	02:50	120.0
23 Sat	06:00	06:40	07:24	08:02	129.7	11:59	271.4	+1.1	07:54	0:39	230.3	15:56	139.4	16:34	17:17	17:58	23:59	16:07	1:21	13:12	138.0	04:14	133.3
24 Sun	06:00	06:41	07:24	08:02	129.7	11:59	272.4	+0.6	07:54	0:40	230.4	15:56	151.7	16:35	17:18	17:59	00:00	16:06	1:21	13:35	150.5	05:38	146.4
25 Mon	06:00	06:41	07:24	08:03	129.6	12:00	273.4	+0.1	07:54	0:40	230.4	15:57	163.8	16:36	17:19	17:59	00:00	16:06	1:20	14:08	162.9	06:59	159.3
26 Tue	06:01	06:42	07:25	08:03	129.6	12:00	274.4	-0.4	07:55	0:40	230.5	15:58	175.8	16:36	17:19	18:00	00:01	16:05	1:20	14:53	175.2	08:10	171.9
27 Wed	06:01	06:42	07:25	08:03	129.5	12:01	275.5	-0.9	07:55	0:40	230.5	15:59	187.5	16:37	17:20	18:01	00:01	16:05	1:20	15:52	187.5	09:07	184.2
28 Thu	06:01	06:42	07:25	08:04	129.4	12:01	276.5	-1.4	07:56	0:40	230.6	15:59	199.0	16:38	17:21	18:02	00:02	16:04	1:20	17:01	199.5	09:48	196.1
29 Fri	06:02	06:42	07:25	08:04	129.3	12:02	277.5	-1.9	07:57	0:40	230.7	16:00	210.3	16:39	17:22	18:02	00:02	16:03	1:20	18:15	211.4	10:17	207.7
30 Sat	06:02	06:43	07:26	08:04	129.2	12:02	278.5	-2.4	07:57	0:40	230.9	16:01	221.4	16:39	17:22	18:03	00:03	16:03	1:20	19:29	223.0	10:38	218.9
31 Sun	06:02	06:43	07:26	08:04	129.1	12:03	279.5	-2.9	07:58	0:40	231.0	16:02	232.4	16:40	17:23	18:04	00:03	16:02	1:20	20:42	234.5	10:54	230.0

° 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 11.161(1691)-Tu <http://individual.utoronto.ca/kalendis/>