October 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	04:08	04:48	05:27	05:59	95.0	11:50	188.0	+10.2	11:41	0:58	264.7	17:40	211.4	18:12	18:50	19:30	23:50	12:20	1:02	18:24	211.8	08:38	206.5
2 Mon	04:10	04:50	05:28	06:00	95.6	11:49	189.0	+10.6	11:37	0:58	264.1	17:38	224.3	18:09	18:48	19:28	23:49	12:24	1:02	18:44	224.9	10:06	220.3
3 Tue	04:12	04:51	05:30	06:02	96.2	11:49	190.0	+10.9	11:34	0:58	263.5	17:35	236.7	18:07	18:46	19:25	23:49	12:28	1:02	19:10	237.5	11:31	233.6
4 Wed	04:13	04:53	05:32	06:03	96.8	11:49	191.0	+11.2	11:30	0:57	262.9	17:33	248.7	18:05	18:44	19:23	23:49	12:32	1:03	19:45	249.8	12:50	246.4
5 Thu	04:15	04:55	05:33	06:05	97.5	11:48	192.0	+11.5	11:26	0:57	262.2	17:31	260.4	18:03	18:41	19:21	23:48	12:36	1:03	20:33	261.8	13:56	258.7
6 Fri	04:17	04:56	05:35	06:07	98.1	11:48	193.0	+11.8	11:22	0:57	261.6	17:29	271.7	18:00	18:39	19:18	23:48	12:40	1:03	21:33	273.6	14:47	270.5
7 Sat	04:19	04:58	05:37	06:08	98.7	11:48	194.0	+12.1	11:18	0:57	261.0	17:26	282.8	17:58	18:37	19:16	23:48	12:44	1:04	22:42	285.2	15:23	281.9
8 Sun	04:20	05:00	05:38	06:10	99.3	11:48	194.9	+12.4	11:14	0:56	260.4	17:24	293.8	17:56	18:35	19:14	23:47	12:48	1:04	23:54	296.7	15:49	293.1
9 Mon	04:22	05:01	05:40	06:12	99.9	11:47	195.9	+12.7	11:10	0:56	259.8	17:22	304.6	17:54	18:32	19:11	23:47	12:51	1:04	never		16:08	304.1
10 Tue	04:24	05:03	05:41	06:13	100.6	11:47	196.9	+12.9	11:06	0:56	259.2	17:20	315.5	17:52	18:30	19:09	23:47	12:55	1:05	01:07	308.1	16:22	315.0
11 Wed	04:26	05:04	05:43	06:15	101.2	11:47	197.9	+13.2	11:03	0:55	258.5	17:18	326.4	17:50	18:28	19:07	23:47	12:59	1:05	02:19	319.5	16:34	326.0
12 Thu	04:27	05:06	05:45	06:17	101.8	11:47	198.9	+13.5	10:59	0:55	257.9	17:15	337.3	17:47	18:26	19:05	23:46	13:03	1:05	03:30	331.0	16:45	337.1
13 Fri	04:29	05:08	05:46	06:18	102.4	11:46	199.9	+13.7	10:55	0:55	257.3	17:13	348.4	17:45	18:24	19:03	23:46	13:07	1:06	04:41	342.6	16:55	348.3
14 Sat	04:31	05:09	05:48	06:20	103.0	11:46	200.9	+13.9	10:51	0:54	256.7	17:11	359.7	17:43	18:22	19:00	23:46	13:11	1:06	05:53	354.3	17:05	359.6
15 Sun	04:32	05:11	05:50	06:22	103.6	11:46	201.9	+14.2	10:47	0:54	256.1	17:09	11.1	17:41	18:20	18:58	23:46	13:15	1:06	07:07	6.3	17:17	11.1
16 Mon	04:34	05:13	05:51	06:24	104.2	11:46	202.9	+14.4	10:43	0:54	255.5	17:07	22.7	17:39	18:18	18:56	23:45	13:18	1:07	08:24	18.5	17:32	22.9
17 Tue	04:36	05:14	05:53	06:25	104.8	11:45	203.8	+14.6	10:40	0:53	254.9	17:05	34.6	17:37	18:16	18:54	23:45	13:22	1:07	09:44	30.9	17:52	35.0
18 Wed	04:37	05:16	05:55	06:27	105.4	11:45	204.8	+14.8	10:36	0:53	254.3	17:03	46.6	17:35	18:14	18:52	23:45	13:26	1:07	11:05	43.6	18:20	47.3
19 Thu	04:39	05:17	05:56	06:29	106.0	11:45	205.8	+15.0	10:32	0:53	253.7	17:01	58.9	17:33	18:12	18:50	23:45	13:30	1:07	12:21	56.5	19:01	60.0
20 Fri	04:40	05:19	05:58	06:30	106.6	11:45	206.8	+15.2	10:28	0:52	253.1	16:58	71.5	17:31	18:10	18:48	23:45	13:34	1:08	13:26	69.6	20:00	73.1
21 Sat	04:42	05:21	05:59	06:32	107.2	11:45	207.8	+15.4	10:24	0:52	252.5	16:56	84.3	17:29	18:08	18:46	23:45	13:37	1:08	14:16	82.9	21:15	86.6
22 Sun	04:44	05:22	06:01	06:34	107.8	11:44	208.8	+15.5	10:21	0:52	251.9	16:54	97.3	17:27	18:06	18:44	23:44	13:41	1:08	14:50	96.2	22:42	100.5
23 Mon	04:45	05:24	06:03	06:36	108.4	11:44	209.8	+15.7	10:17	0:51	251.4	16:52	110.6	17:25	18:04	18:42	23:44	13:45	1:09	15:14	109.7	never
24 Tue	04:47	05:25	06:04	06:37	109.0	11:44	210.8	+15.8	10:13	0:51	250.8	16:50	124.0	17:23	18:02	18:40	23:44	13:49	1:09	15:33	123.3	00:12	114.7
25 Wed	04:48	05:27	06:06	06:39	109.5	11:44	211.8	+15.9	10:09	0:51	250.2	16:48	137.5	17:21	18:00	18:39	23:44	13:52	1:09	15:47	136.9	01:42	129.0
26 Thu	04:50	05:29	06:08	06:41	110.1	11:44	212.8	+16.0	10:06	0:50	249.6	16:46	151.1	17:19	17:58	18:37	23:44	13:56	1:10	16:00	150.7	03:10	143.4
27 Fri	04:52	05:30	06:09	06:42	110.7	11:44	213.8	+16.1	10:02	0:50	249.1	16:44	164.6	17:18	17:57	18:35	23:44	14:00	1:10	16:13	164.3	04:38	157.8
28 Sat	04:53	05:32	06:11	06:44	111.3	11:44	214.8	+16.2	09:58	0:50	248.5	16:43	178.0	17:16	17:55	18:33	23:44	14:03	1:10	16:28	177.8	06:05	172.1
29 Sun	04:55	05:33	06:13	06:46	111.8	11:44	215.8	+16.3	09:55	0:50	248.0	16:41	191.1	17:14	17:53	18:32	23:44	14:07	1:11	16:45	191.1	07:34	186.1
30 Mon	04:56	05:35	06:14	06:48	112.4	11:44	216.8	+16.4	09:51	0:49	247.4	16:39	203.9	17:12	17:51	18:30	23:44	14:11	1:11	17:08	204.1	09:01	199.8
31 Tue	04:58	05:37	06:16	06:49	112.9	11:44	217.8	+16.4	09:48	0:49	246.9	16:37	216.3	17:10	17:50	18:28	23:44	14:14	1:11	17:39	216.8	10:25	213.1

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