January 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 Sun	06:02	06:43	07:26	08:04	128.9	12:03	280.8	-3.4	08:00	0:40	231.2	16:03	121.1	16:41	17:24	18:05	00:04	16:00	1:20	12:32	119.4	02:34	114.6
2 Mon	06:02	06:43	07:26	08:04	128.7	12:04	281.8	-3.9	08:01	0:40	231.3	16:04	132.6	16:42	17:25	18:06	00:04	15:59	1:20	12:49	131.0	03:50	126.8
3 Tue	06:02	06:43	07:25	08:03	128.5	12:04	282.8	-4.4	08:02	0:40	231.5	16:06	143.8	16:44	17:26	18:07	00:05	15:58	1:20	13:11	142.4	05:06	138.7
4 Wed	06:02	06:43	07:25	08:03	128.4	12:05	283.9	-4.8	08:04	0:40	231.7	16:07	154.9	16:45	17:27	18:08	00:05	15:56	1:20	13:41	153.8	06:18	150.4
5 Thu	06:02	06:42	07:25	08:03	128.1	12:05	284.9	-5.3	08:05	0:40	231.9	16:08	165.9	16:46	17:28	18:09	00:06	15:55	1:20	14:21	165.1	07:24	161.9
6 Fri	06:02	06:42	07:25	08:03	127.9	12:06	285.9	-5.7	08:07	0:41	232.1	16:09	176.8	16:47	17:29	18:10	00:06	15:53	1:19	15:12	176.4	08:19	173.3
7 Sat	06:02	06:42	07:25	08:02	127.7	12:06	286.9	-6.2	08:08	0:41	232.4	16:10	187.7	16:48	17:31	18:11	00:06	15:51	1:19	16:14	187.7	09:02	184.5
8 Sun	06:01	06:42	07:24	08:02	127.5	12:07	287.9	-6.6	08:10	0:41	232.6	16:12	198.6	16:49	17:32	18:12	00:07	15:50	1:19	17:22	199.1	09:34	195.6
9 Mon	06:01	06:42	07:24	08:01	127.2	12:07	288.9	-7.0	08:12	0:41	232.9	16:13	209.5	16:50	17:33	18:13	00:07	15:48	1:19	18:34	210.5	09:58	206.6
10 Tue	06:01	06:41	07:23	08:01	126.9	12:07	290.0	-7.4	08:14	0:41	233.2	16:14	220.3	16:52	17:34	18:14	00:08	15:46	1:19	19:45	221.9	10:16	217.6
11 Wed	06:01	06:41	07:23	08:00	126.6	12:08	291.0	-7.8	08:16	0:41	233.4	16:16	231.3	16:53	17:35	18:15	00:08	15:44	1:19	20:57	233.5	10:30	228.7
12 Thu	06:00	06:40	07:22	08:00	126.4	12:08	292.0	-8.2	08:18	0:41	233.7	16:17	242.4	16:54	17:36	18:17	00:08	15:42	1:18	22:08	245.1	10:42	239.8
13 Fri	06:00	06:40	07:22	07:59	126.0	12:09	293.0	-8.6	08:20	0:42	234.1	16:19	253.7	16:56	17:38	18:18	00:09	15:39	1:18	23:20	257.0	10:54	251.1
14 Sat	05:59	06:39	07:21	07:58	125.7	12:09	294.0	-9.0	08:22	0:42	234.4	16:20	265.2	16:57	17:39	18:19	00:09	15:37	1:18	never		11:05	262.6
15 Sun	05:59	06:39	07:21	07:57	125.4	12:09	295.1	-9.3	08:24	0:42	234.7	16:22	277.0	16:59	17:40	18:20	00:09	15:35	1:18	00:35	269.2	11:18	274.5
16 Mon	05:58	06:38	07:20	07:56	125.1	12:10	296.1	-9.7	08:27	0:42	235.1	16:23	289.3	17:00	17:42	18:22	00:10	15:32	1:18	01:53	281.9	11:33	286.8
17 Tue	05:58	06:37	07:19	07:56	124.7	12:10	297.1	-10.0	08:29	0:42	235.4	16:25	302.1	17:01	17:43	18:23	00:10	15:30	1:17	03:16	295.0	11:54	299.6
18 Wed	05:57	06:37	07:18	07:55	124.3	12:10	298.1	-10.3	08:32	0:43	235.8	16:27	315.3	17:03	17:44	18:24	00:10	15:27	1:17	04:43	308.8	12:23	313.0
19 Thu	05:56	06:36	07:17	07:54	124.0	12:11	299.1	-10.6	08:35	0:43	236.2	16:28	329.0	17:04	17:46	18:26	00:11	15:24	1:17	06:08	323.0	13:07	327.0
20 Fri	05:55	06:35	07:16	07:53	123.6	12:11	300.2	-10.9	08:37	0:43	236.6	16:30	343.1	17:06	17:47	18:27	00:11	15:22	1:17	07:22	337.7	14:11	341.7
21 Sat	05:55	06:34	07:16	07:52	123.2	12:11	301.2	-11.2	08:40	0:43	237.0	16:31	357.4	17:07	17:49	18:28	00:11	15:19	1:17	08:17	352.5	15:34	356.8
22 Sun	05:54	06:33	07:15	07:50	122.8	12:12	302.2	-11.5	08:43	0:44	237.4	16:33	11.8	17:09	17:50	18:30	00:12	15:16	1:16	08:56	7.2	17:08	12.1
23 Mon	05:53	06:32	07:14	07:49	122.4	12:12	303.2	-11.8	08:46	0:44	237.8	16:35	26.0	17:11	17:52	18:31	00:12	15:13	1:16	09:22	21.7	18:43	27.2
24 Tue	05:52	06:32	07:12	07:48	121.9	12:12	304.2	-12.0	08:49	0:44	238.2	16:37	39.8	17:12	17:53	18:33	00:12	15:10	1:16	09:41	35.9	20:14	41.9
25 Wed	05:51	06:31	07:11	07:47	121.5	12:12	305.2	-12.3	08:51	0:44	238.6	16:38	53.3	17:14	17:55	18:34	00:12	15:07	1:16	09:57	49.6	21:39	56.0
26 Thu	05:50	06:29	07:10	07:46	121.1	12:12	306.3	-12.5	08:54	0:45	239.1	16:40	66.2	17:15	17:56	18:35	00:13	15:04	1:15	10:10	62.8	23:01	69.6
27 Fri	05:49	06:28	07:09	07:44	120.6	12:13	307.3	-12.7	08:58	0:45	239.5	16:42	78.7	17:17	17:58	18:37	00:13	15:01	1:15	10:23	75.5	never
28 Sat	05:48	06:27	07:08	07:43	120.2	12:13	308.3	-12.9	09:01	0:45	240.0	16:44	90.7	17:19	17:59	18:38	00:13	14:58	1:15	10:37	87.7	00:21	82.6
29 Sun	05:47	06:26	07:07	07:41	119.7	12:13	309.3	-13.1	09:04	0:45	240.5	16:45	102.3	17:20	18:01	18:40	00:13	14:55	1:15	10:54	99.5	01:39	95.1
30 Mon	05:46	06:25	07:05	07:40	119.2	12:13	310.3	-13.2	09:07	0:46	241.0	16:47	113.7	17:22	18:02	18:41	00:13	14:51	1:14	11:14	111.1	02:56	107.2
31 Tue	05:45	06:24	07:04	07:39	118.7	12:13	311.3	-13.4	09:10	0:46	241.4	16:49	124.8	17:24	18:04	18:43	00:13	14:48	1:14	11:42	122.4	04:10	119.0

° 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/>