Astronomical Almanac

September 2021

Month Year

Day	Sunrise/Sunset		Day Length		Astronomical Twilight		Nautical Twilight		Civil Twilight		Solar Noon
Day	Sunrise	Sunset	Length	Diff.	Start	End	Start	End	Start	End	Time	Mil. mi.
1 +	6:28 AM	7:45 PM	13:17:44	-3:16	4:35 AM	9:38 PM	5:16 AM	8:57 PM	5:54 AM	8:18 PM	1:05 PM (50.7°)	93.8

2 +	6:29 AM	7:43 PM	13:14:27	-3:17	4:36 AM	9:35 PM	5:17 AM	8:55 PM	5:56 AM	8:16 PM	1:05 PM (50.4°)	93.78

3 +	6:30 AM	7:41 PM	13:11:10	-3:17	4:38 AM	9:33 PM	5:19 AM	8:52 PM	5:57 AM	8:14 PM	1:05 PM (50.0°)	93.76

4 +	6:32 AM	7:39 PM	13:07:52	-3:18	4:40 AM	9:30 PM	5:21 AM	8:50 PM	5:59 AM	8:12 PM	1:05 PM (49.6°)	93.73

5 +	6:33 AM	7:37 PM	13:04:34	-3:18	4:42 AM	9:28 PM	5:22 AM	8:48 PM	6:00 AM	8:10 PM	1:05 PM (49.3°)	93.71

6 +	6:34 AM	7:35 PM	13:01:15	-3:19	4:44 AM	9:25 PM	5:24 AM	8:46 PM	6:01 AM	8:08 PM	1:05 PM (48.9°)	93.69

7 +	6:36 AM	7:33 PM	12:57:56	-3:19	4:45 AM	9:23 PM	5:25 AM	8:44 PM	6:03 AM	8:06 PM	1:05 PM (48.5°)	93.67

8 +	6:37 AM	7:31 PM	12:54:36	-3:20	4:47 AM	9:21 PM	5:27 AM	8:41 PM	6:04 AM	8:04 PM	1:05 PM (48.2°)	93.64

9 +	6:38 AM	7:29 PM	12:51:16	-3:20	4:49 AM	9:18 PM	5:28 AM	8:39 PM	6:06 AM	8:02 PM	1:05 PM (47.8°)	93.62

10 +	6:39 AM	7:27 PM	12:47:56	-3:20	4:51 AM	9:16 PM	5:30 AM	8:37 PM	6:07 AM	8:00 PM	1:05 PM (47.4°)	93.59

11 +	6:41 AM	7:25 PM	12:44:36	-3:20	4:52 AM	9:13 PM	5:31 AM	8:35 PM	6:08 AM	7:58 PM	1:05 PM (47.0°)	93.57

12 +	6:42 AM	7:23 PM	12:41:15	-3:21	4:54 AM	9:11 PM	5:33 AM	8:33 PM	6:10 AM	7:56 PM	1:05 PM (46.6°)	93.54

13 +	6:43 AM	7:21 PM	12:37:54	-3:21	4:56 AM	9:09 PM	5:34 AM	8:30 PM	6:11 AM	7:54 PM	1:05 PM (46.3°)	93.52

14 +	6:45 AM	7:19 PM	12:34:33	-3:21	4:57 AM	9:06 PM	5:36 AM	8:28 PM	6:12 AM	7:52 PM	1:05 PM (45.9°)	93.49

15 +	6:46 AM	7:17 PM	12:31:12	-3:21	4:59 AM	9:04 PM	5:37 AM	8:26 PM	6:14 AM	7:50 PM	1:00 PM (45.5°)	93.47

16 +	6:47 AM	7:15 PM	12:27:50	-3:22	5:01 AM	9:02 PM	5:39 AM	8:24 PM	6:15 AM	7:47 PM	1:00 PM (45.1°)	93.44

17 +	6:49 AM	7:13 PM	12:24:28	-3:22	5:02 AM	8:59 PM	5:40 AM	8:22 PM	6:17 AM	7:45 PM	1:00 PM (44.7°)	93.42

18 +	6:50 AM	7:11 PM	12:21:06	-3:22	5:04 AM	8:57 PM	5:42 AM	8:19 PM	6:18 AM	7:43 PM	1:00 PM (44.3°)	93.39

19 +	6:51 AM	7:09 PM	12:17:44	-3:22	5:05 AM	8:55 PM	5:43 AM	8:17 PM	6:19 AM	7:41 PM	1:00 PM (44.0°)	93.36

20 +	6:53 AM	7:07 PM	12:14:22	-3:22	5:07 AM	8:52 PM	5:44 AM	8:15 PM	6:21 AM	7:39 PM	1:00 PM (43.6°)	93.34

21 +	6:54 AM	7:05 PM	12:11:00	-3:22	5:09 AM	8:50 PM	5:46 AM	8:13 PM	6:22 AM	7:37 PM	1:00 PM (43.2°)	93.31

22 +	6:55 AM	7:03 PM	12:07:37	-3:23	5:10 AM	8:48 PM	5:47 AM	8:11 PM	6:23 AM	7:35 PM	1:00 PM (42.8°)	93.29

23 +	6:57 AM	7:01 PM	12:04:15	-3:22	5:12 AM	8:46 PM	5:49 AM	8:09 PM	6:25 AM	7:33 PM	1:00 PM (42.4°)	93.26

24 +	6:58 AM	6:59 PM	12:00:53	-3:22	5:13 AM	8:43 PM	5:50 AM	8:07 PM	6:26 AM	7:31 PM	1:00 PM (42.0°)	93.23

25 +	6:59 AM	6:57 PM	11:57:30	-3:23	5:15 AM	8:41 PM	5:52 AM	8:05 PM	6:27 AM	7:29 PM	1:00 PM (41.6°)	93.21

26 +	7:01 AM	6:55 PM	11:54:08	-3:22	5:16 AM	8:39 PM	5:53 AM	8:03 PM	6:29 AM	7:27 PM	1:00 PM (41.2°)	93.18

27 +	7:02 AM	6:53 PM	11:50:45	-3:23	5:18 AM	8:37 PM	5:54 AM	8:00 PM	6:30 AM	7:25 PM	1:00 PM (40.8°)	93.16

28 +	7:03 AM	6:51 PM	11:47:22	-3:23	5:19 AM	8:35 PM	5:56 AM	7:58 PM	6:31 AM	7:23 PM	1:00 PM (40.5°)	93.13

29 +	7:05 AM	6:49 PM	11:44:00	-3:22	5:21 AM	8:33 PM	5:57 AM	7:56 PM	6:33 AM	7:21 PM	12:55 PM (38.5°)	93.11

30 +	7:06 AM	6:47 PM	11:40:38	-3:22	5:22 AM	8:30 PM	5:59 AM	7:54 PM	6:34 AM	7:19 PM	12:55 PM (38.1°)	93.08

Day	Moonrise/Moonset			Meridian Passing
Day	Moonrise	Moonset	Moonrise	Time	Thou. mi.	Illumination
1 +	12:17 AM	5:17 PM	-	8:45 AM (66.7°)	245.28	27%

2 +	1:07 AM	6:05 PM	-	9:40 AM (67.1°)	243.05	19%

3 +	2:07 AM	6:45 PM	-	10:30 AM (66.0°)	240.4	11%

4 +	3:15 AM	7:17 PM	-	11:20 AM (63.5°)	237.53	5%

5 +	4:28 AM	7:44 PM	-	12:10 PM (59.6°)	234.67	2%

6 +	5:44 AM	8:07 PM	-	1:00 PM (54.5°)	232.02	0%

7 +	7:00 AM	8:28 PM	-	1:50 PM (47.4°)	229.76	1%

8 +	8:18 AM	8:49 PM	-	2:35 PM (41.7°)	228.02	4%

9 +	9:36 AM	9:10 PM	-	3:25 PM (35.7°)	226.85	9%

10 +	10:55 AM	9:34 PM	-	4:15 PM (29.8°)	226.27	16%

11 +	12:16 PM	10:02 PM	-	5:10 PM (24.5°)	226.2	24%

12 +	1:36 PM	10:37 PM	-	6:05 PM (20.4°)	226.58	34%

13 +	2:53 PM	11:22 PM	-	7:10 PM (17.6°)	227.31	44%

14 +	4:01 PM	-	-	8:10 PM (16.6°)	228.34	55%

15 +	-	12:19 AM	4:58 PM	9:10 PM (17.4°)	229.6	65%

16 +	-	1:25 AM	5:43 PM	10:10 PM (19.9°)	231.08	75%

17 +	-	2:39 AM	6:18 PM	11:05 PM (23.7°)	232.77	83%

18 +	-	3:54 AM	6:45 PM	11:55 PM (27.3°)	234.66	91%

19 +	-	5:09 AM	7:07 PM	12:00 AM (28.5°)	236.73	96%

20 +	-	6:21 AM	7:27 PM	12:00 AM (33.1°)	238.92	99%

21 +	-	7:31 AM	7:44 PM	1:25 AM (39.3°)	241.16	100%

22 +	-	8:39 AM	8:02 PM	2:10 AM (45.3°)	243.33	99%

23 +	-	9:47 AM	8:20 PM	2:50 AM (49.4°)	245.28	95%

24 +	-	10:54 AM	8:41 PM	3:35 AM (55.2°)	246.86	90%

25 +	-	12:01 PM	9:05 PM	4:15 AM (60.2°)	247.94	83%

26 +	-	1:07 PM	9:34 PM	5:00 AM (64.1°)	248.37	74%

27 +	-	2:10 PM	10:10 PM	5:50 AM (65.0°)	248.08	64%

28 +	-	3:08 PM	10:55 PM	6:40 AM (67.2°)	247.02	54%

29 +	-	3:59 PM	11:50 PM	7:30 AM (68.1°)	245.2	43%

30 +	-	4:42 PM	-	8:20 AM (67.5°)	242.71	33%