Astronomical Almanac

February 1981

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 +	7:36 AM	5:10 PM	9:34:05	+2:50	5:49 AM	6:57 PM	6:25 AM	6:21 PM	7:02 AM	5:45 PM	12:25 PM (25.6°)	91.61

2 +	7:35 AM	5:12 PM	9:36:58	+2:53	5:48 AM	6:59 PM	6:24 AM	6:23 PM	7:01 AM	5:46 PM	12:25 PM (25.9°)	91.63

3 +	7:34 AM	5:13 PM	9:39:53	+2:55	5:47 AM	7:00 PM	6:23 AM	6:24 PM	6:59 AM	5:48 PM	12:25 PM (26.2°)	91.64

4 +	7:32 AM	5:15 PM	9:42:50	+2:57	5:46 AM	7:01 PM	6:22 AM	6:26 PM	6:58 AM	5:49 PM	12:25 PM (26.5°)	91.65

5 +	7:31 AM	5:17 PM	9:45:48	+2:58	5:45 AM	7:03 PM	6:20 AM	6:27 PM	6:57 AM	5:51 PM	12:25 PM (26.8°)	91.67

6 +	7:29 AM	5:18 PM	9:48:49	+3:01	5:44 AM	7:04 PM	6:19 AM	6:28 PM	6:56 AM	5:52 PM	12:25 PM (27.1°)	91.68

7 +	7:28 AM	5:20 PM	9:51:50	+3:01	5:42 AM	7:05 PM	6:18 AM	6:30 PM	6:54 AM	5:54 PM	12:25 PM (27.4°)	91.7

8 +	7:26 AM	5:21 PM	9:54:54	+3:04	5:41 AM	7:07 PM	6:17 AM	6:31 PM	6:53 AM	5:55 PM	12:25 PM (27.7°)	91.72

9 +	7:25 AM	5:23 PM	9:57:59	+3:05	5:40 AM	7:08 PM	6:15 AM	6:33 PM	6:51 AM	5:56 PM	12:25 PM (28.0°)	91.73

10 +	7:23 AM	5:24 PM	10:01:05	+3:06	5:38 AM	7:10 PM	6:14 AM	6:34 PM	6:50 AM	5:58 PM	12:25 PM (28.4°)	91.75

11 +	7:22 AM	5:26 PM	10:04:12	+3:07	5:37 AM	7:11 PM	6:12 AM	6:35 PM	6:48 AM	5:59 PM	12:25 PM (28.7°)	91.76

12 +	7:20 AM	5:28 PM	10:07:21	+3:09	5:35 AM	7:12 PM	6:11 AM	6:37 PM	6:47 AM	6:01 PM	12:25 PM (29.0°)	91.78

13 +	7:19 AM	5:29 PM	10:10:32	+3:11	5:34 AM	7:14 PM	6:09 AM	6:38 PM	6:45 AM	6:02 PM	12:25 PM (29.4°)	91.8

14 +	7:17 AM	5:31 PM	10:13:43	+3:11	5:33 AM	7:15 PM	6:08 AM	6:40 PM	6:44 AM	6:04 PM	12:25 PM (29.7°)	91.82

15 +	7:15 AM	5:32 PM	10:16:55	+3:12	5:31 AM	7:17 PM	6:06 AM	6:41 PM	6:42 AM	6:05 PM	12:25 PM (30.0°)	91.83

16 +	7:14 AM	5:34 PM	10:20:09	+3:14	5:30 AM	7:18 PM	6:05 AM	6:43 PM	6:41 AM	6:07 PM	12:25 PM (30.4°)	91.85

17 +	7:12 AM	5:35 PM	10:23:23	+3:14	5:28 AM	7:19 PM	6:03 AM	6:44 PM	6:39 AM	6:08 PM	12:25 PM (30.7°)	91.87

18 +	7:10 AM	5:37 PM	10:26:38	+3:15	5:26 AM	7:21 PM	6:02 AM	6:45 PM	6:37 AM	6:10 PM	12:25 PM (31.1°)	91.89

19 +	7:09 AM	5:38 PM	10:29:55	+3:17	5:25 AM	7:22 PM	6:00 AM	6:47 PM	6:36 AM	6:11 PM	12:25 PM (31.5°)	91.91

20 +	7:07 AM	5:40 PM	10:33:12	+3:17	5:23 AM	7:24 PM	5:58 AM	6:48 PM	6:34 AM	6:13 PM	12:25 PM (31.8°)	91.93

21 +	7:05 AM	5:41 PM	10:36:29	+3:17	5:21 AM	7:25 PM	5:57 AM	6:50 PM	6:32 AM	6:14 PM	12:25 PM (32.2°)	91.95

22 +	7:03 AM	5:43 PM	10:39:48	+3:19	5:20 AM	7:27 PM	5:55 AM	6:51 PM	6:31 AM	6:16 PM	12:25 PM (32.5°)	91.97

23 +	7:01 AM	5:45 PM	10:43:07	+3:19	5:18 AM	7:28 PM	5:53 AM	6:53 PM	6:29 AM	6:17 PM	12:25 PM (32.9°)	91.99

24 +	7:00 AM	5:46 PM	10:46:27	+3:20	5:16 AM	7:30 PM	5:52 AM	6:54 PM	6:27 AM	6:19 PM	12:25 PM (33.3°)	92.02

25 +	6:58 AM	5:48 PM	10:49:47	+3:20	5:15 AM	7:31 PM	5:50 AM	6:56 PM	6:25 AM	6:20 PM	12:25 PM (33.7°)	92.04

26 +	6:56 AM	5:49 PM	10:53:08	+3:21	5:13 AM	7:32 PM	5:48 AM	6:57 PM	6:24 AM	6:21 PM	12:25 PM (34.0°)	92.06

27 +	6:54 AM	5:51 PM	10:56:30	+3:22	5:11 AM	7:34 PM	5:46 AM	6:58 PM	6:22 AM	6:23 PM	12:25 PM (34.4°)	92.08

28 +	6:52 AM	5:52 PM	10:59:52	+3:22	5:09 AM	7:35 PM	5:45 AM	7:00 PM	6:20 AM	6:24 PM	12:25 PM (34.8°)	92.11

Day	Moonrise/Moonset			Meridian Passing
Day	Moonrise	Moonset	Moonrise	Time	Thou. mi.	Illumination
1 +	4:56 AM	2:19 PM	-	9:40 AM (22.0°)	239.49	9%

2 +	5:50 AM	3:13 PM	-	10:30 AM (22.1°)	236.5	4%

3 +	6:39 AM	4:15 PM	-	11:25 AM (23.4°)	233.59	1%

4 +	7:22 AM	5:23 PM	-	12:25 PM (25.9°)	230.98	0%

5 +	8:00 AM	6:36 PM	-	1:20 PM (29.4°)	228.83	2%

6 +	8:34 AM	7:50 PM	-	2:10 PM (33.8°)	227.28	6%

7 +	9:04 AM	9:05 PM	-	3:05 PM (38.7°)	226.34	11%

8 +	9:34 AM	10:20 PM	-	3:55 PM (42.4°)	226.01	19%

9 +	10:02 AM	11:35 PM	-	4:45 PM (47.8°)	226.2	28%

10 +	10:33 AM	-	-	5:40 PM (52.8°)	226.81	38%

11 +	-	12:50 AM	11:06 AM	6:30 PM (57.0°)	227.75	48%

12 +	-	2:03 AM	11:44 AM	7:25 PM (60.1°)	228.94	59%

13 +	-	3:12 AM	12:27 PM	8:20 PM (62.1°)	230.33	69%

14 +	-	4:17 AM	1:18 PM	9:15 PM (62.8°)	231.89	78%

15 +	-	5:14 AM	2:15 PM	10:10 PM (62.3°)	233.63	86%

16 +	-	6:03 AM	3:18 PM	11:05 PM (60.5°)	235.54	93%

17 +	-	6:44 AM	4:23 PM	12:00 AM (58.5°)	237.6	97%

18 +	-	7:19 AM	5:30 PM	12:00 AM (57.7°)	239.77	100%

19 +	-	7:49 AM	6:35 PM	12:45 AM (53.1°)	241.95	100%

20 +	-	8:15 AM	7:39 PM	1:30 AM (49.7°)	244.03	98%

21 +	-	8:39 AM	8:42 PM	2:10 AM (45.8°)	245.87	93%

22 +	-	9:03 AM	9:44 PM	2:55 AM (40.2°)	247.32	87%

23 +	-	9:27 AM	10:45 PM	3:35 AM (36.7°)	248.24	79%

24 +	-	9:52 AM	11:45 PM	4:20 AM (33.2°)	248.5	70%

25 +	-	10:19 AM	-	5:05 AM (29.7°)	248.02	60%

26 +	12:45 AM	10:50 AM	-	5:50 AM (25.8°)	246.77	49%

27 +	1:45 AM	11:26 AM	-	6:35 AM (23.9°)	244.75	39%

28 +	2:43 AM	12:08 PM	-	7:25 AM (22.6°)	242.08	29%