August 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 Tue	01:31	02:48	03:43	04:22	60.1	12:06	129.0	-6.4	15:29	1:17	299.6	19:50	180.8	20:29	21:23	22:38	00:06	08:33	0:43	20:23	181.1	03:07	170.8
2 Wed	01:35	02:50	03:44	04:23	60.6	12:06	130.0	-6.3	15:25	1:17	299.2	19:48	195.1	20:27	21:21	22:34	00:06	08:36	0:43	20:47	195.7	04:42	186.1
3 Thu	01:39	02:52	03:46	04:25	61.0	12:06	130.9	-6.2	15:22	1:17	298.7	19:47	209.3	20:25	21:18	22:30	00:06	08:39	0:43	21:04	210.1	06:18	201.3
4 Fri	01:43	02:55	03:48	04:26	61.5	12:06	131.9	-6.1	15:19	1:17	298.2	19:45	223.2	20:23	21:16	22:26	00:06	08:43	0:44	21:19	224.1	07:50	216.3
5 Sat	01:47	02:57	03:50	04:28	61.9	12:06	132.8	-6.0	15:16	1:16	297.8	19:43	236.7	20:21	21:13	22:22	00:06	08:46	0:44	21:32	237.7	09:18	230.9
6 Sun	01:51	02:59	03:51	04:29	62.4	12:06	133.8	-5.9	15:12	1:16	297.3	19:42	249.8	20:19	21:11	22:18	00:06	08:49	0:44	21:45	250.9	10:43	244.9
7 Mon	01:54	03:01	03:53	04:31	62.9	12:06	134.7	-5.8	15:09	1:16	296.8	19:40	262.4	20:17	21:08	22:14	00:06	08:53	0:44	22:00	263.6	12:07	258.5
8 Tue	01:58	03:04	03:55	04:32	63.4	12:06	135.7	-5.7	15:06	1:15	296.3	19:38	274.6	20:15	21:06	22:11	00:06	08:56	0:45	22:18	276.0	13:29	271.5
9 Wed	02:01	03:06	03:57	04:34	63.9	12:06	136.7	-5.6	15:02	1:15	295.8	19:36	286.5	20:13	21:03	22:07	00:05	08:59	0:45	22:42	288.0	14:49	284.1
10 Thu	02:05	03:08	03:58	04:35	64.4	12:05	137.6	-5.4	14:59	1:15	295.3	19:34	298.1	20:11	21:01	22:03	00:05	09:03	0:45	23:13	299.8	16:05	296.4
11 Fri	02:08	03:10	04:00	04:37	64.9	12:05	138.6	-5.3	14:55	1:15	294.8	19:32	309.4	20:09	20:58	22:00	00:05	09:06	0:46	23:56	311.5	17:12	308.3
12 Sat	02:11	03:13	04:02	04:39	65.4	12:05	139.5	-5.1	14:52	1:14	294.3	19:30	320.6	20:07	20:56	21:56	00:05	09:10	0:46	never		18:05	320.0
13 Sun	02:15	03:15	04:04	04:40	65.9	12:05	140.5	-4.9	14:48	1:14	293.8	19:29	331.7	20:05	20:53	21:53	00:05	09:13	0:46	00:51	323.1	18:46	331.3
14 Mon	02:18	03:17	04:06	04:42	66.4	12:05	141.5	-4.7	14:45	1:14	293.3	19:27	342.6	20:03	20:51	21:49	00:05	09:17	0:46	01:56	334.6	19:15	342.5
15 Tue	02:21	03:19	04:07	04:43	66.9	12:05	142.4	-4.5	14:41	1:13	292.8	19:25	353.5	20:00	20:48	21:46	00:04	09:20	0:47	03:07	346.1	19:37	353.6
16 Wed	02:24	03:21	04:09	04:45	67.5	12:04	143.4	-4.3	14:38	1:13	292.2	19:23	4.4	19:58	20:46	21:42	00:04	09:24	0:47	04:20	357.6	19:53	4.6
17 Thu	02:27	03:23	04:11	04:47	68.0	12:04	144.3	-4.1	14:34	1:13	291.7	19:21	15.3	19:56	20:43	21:39	00:04	09:28	0:47	05:32	9.0	20:05	15.6
18 Fri	02:30	03:26	04:13	04:48	68.5	12:04	145.3	-3.9	14:30	1:13	291.1	19:19	26.2	19:54	20:41	21:36	00:04	09:31	0:48	06:42	20.4	20:16	26.6
19 Sat	02:33	03:28	04:14	04:50	69.1	12:04	146.3	-3.7	14:27	1:12	290.6	19:17	37.1	19:52	20:38	21:32	00:04	09:35	0:48	07:52	31.9	20:27	37.7
20 Sun	02:35	03:30	04:16	04:51	69.6	12:03	147.2	-3.5	14:23	1:12	290.1	19:14	48.2	19:49	20:35	21:29	00:03	09:39	0:48	09:03	43.5	20:37	48.8
21 Mon	02:38	03:32	04:18	04:53	70.2	12:03	148.2	-3.2	14:19	1:12	289.5	19:12	59.4	19:47	20:33	21:26	00:03	09:42	0:49	10:14	55.2	20:48	60.1
22 Tue	02:41	03:34	04:20	04:55	70.7	12:03	149.2	-3.0	14:16	1:11	288.9	19:10	70.8	19:45	20:30	21:23	00:03	09:46	0:49	11:29	67.1	21:02	71.7
23 Wed	02:44	03:36	04:22	04:56	71.3	12:03	150.1	-2.7	14:12	1:11	288.4	19:08	82.6	19:43	20:28	21:19	00:03	09:50	0:49	12:47	79.4	21:20	83.7
24 Thu	02:46	03:38	04:23	04:58	71.8	12:02	151.1	-2.4	14:08	1:11	287.8	19:06	94.7	19:40	20:25	21:16	00:02	09:53	0:49	14:08	92.1	21:45	96.0
25 Fri	02:49	03:40	04:25	04:59	72.4	12:02	152.0	-2.2	14:04	1:10	287.3	19:04	107.2	19:38	20:23	21:13	00:02	09:57	0:50	15:29	105.3	22:22	109.0
26 Sat	02:52	03:42	04:27	05:01	73.0	12:02	153.0	-1.9	14:01	1:10	286.7	19:02	120.2	19:36	20:20	21:10	00:02	10:01	0:50	16:41	118.9	23:17	122.6
27 Sun	02:54	03:44	04:28	05:03	73.6	12:02	154.0	-1.6	13:57	1:10	286.1	19:00	133.7	19:33	20:17	21:07	00:01	10:05	0:50	17:38	132.9	never
28 Mon	02:57	03:46	04:30	05:04	74.1	12:01	154.9	-1.3	13:53	1:09	285.5	18:57	147.5	19:31	20:15	21:04	00:01	10:08	0:51	18:19	147.2	00:33	136.9
29 Tue	02:59	03:48	04:32	05:06	74.7	12:01	155.9	-1.0	13:49	1:09	284.9	18:55	161.7	19:29	20:12	21:01	00:01	10:12	0:51	18:47	161.6	02:03	151.7
30 Wed	03:02	03:50	04:34	05:07	75.3	12:01	156.9	-0.7	13:46	1:09	284.4	18:53	176.0	19:27	20:10	20:58	00:01	10:16	0:51	19:07	176.1	03:39	166.9
31 Thu	03:04	03:52	04:35	05:09	75.9	12:00	157.8	-0.4	13:42	1:08	283.8	18:51	190.2	19:24	20:07	20:55	00:00	10:20	0:52	19:23	190.6	05:14	182.2

° 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/>