UT Times for 6 degree solar depression angle at ALO at Utah State University
"1st Hr" is the first UT hour after the sun has dropped below 6° solar depression 
angle. "Last Hr" is the last UT hour before the sun rises above 6° solar depression 
angle.  Accordingly, the nighttime model calculations for January 1, 2002, are 
between and 1 and 14 UT, inclusive, and the nighttime model calculations for 
June 21, 2002, are between 4 and 11 UT, inclusive.  
Calculations by Troy Wynn, October 10, 2004.

Date	Morning	Evening	Darkness1st Hr	Last Hr
1/1/02	14:23	0:38	13:45	1	14
1/2/02	14:23	0:39	13:44	1	14
1/3/02	14:24	0:40	13:44	1	14
1/4/02	14:24	0:41	13:43	1	14
1/5/02	14:24	0:42	13:42	1	14
1/6/02	14:24	0:42	13:42	1	14
1/7/02	14:23	0:43	13:40	1	14
1/8/02	14:23	0:44	13:39	1	14
1/9/02	14:23	0:45	13:38	1	14
1/10/02	14:23	0:46	13:37	1	14
1/11/02	14:23	0:47	13:36	1	14
1/12/02	14:23	0:48	13:35	1	14
1/13/02	14:22	0:49	13:33	1	14
1/14/02	14:22	0:50	13:32	1	14
1/15/02	14:22	0:51	13:31	1	14
1/16/02	14:21	0:53	13:28	1	14
1/17/02	14:21	0:54	13:27	1	14
1/18/02	14:20	0:55	13:25	1	14
1/19/02	14:20	0:56	13:24	1	14
1/20/02	14:19	0:57	13:22	1	14
1/21/02	14:19	0:58	13:21	1	14
1/22/02	14:18	0:59	13:19	1	14

1/23/02	14:17	1:00	13:17	2	14
1/24/02	14:17	1:02	13:15	2	14
1/25/02	14:16	1:03	13:13	2	14
1/26/02	14:15	1:04	13:11	2	14
1/27/02	14:15	1:05	13:10	2	14
1/28/02	14:14	1:06	13:08	2	14
1/29/02	14:13	1:07	13:06	2	14
1/30/02	14:12	1:09	13:03	2	14
1/31/02	14:11	1:10	13:01	2	14
2/1/02	14:10	1:11	12:59	2	14
2/2/02	14:09	1:12	12:57	2	14
2/3/02	14:08	1:13	12:55	2	14
2/4/02	14:07	1:15	12:52	2	14
2/5/02	14:06	1:16	12:50	2	14
2/6/02	14:05	1:17	12:48	2	14
2/7/02	14:04	1:18	12:46	2	14
2/8/02	14:03	1:20	12:43	2	14
2/9/02	14:02	1:21	12:41	2	14
2/10/02	14:01	1:22	12:39	2	14

2/11/02	13:59	1:23	12:36	2	13
2/12/02	13:58	1:24	12:34	2	13
2/13/02	13:57	1:26	12:31	2	13
2/14/02	13:56	1:27	12:29	2	13
2/15/02	13:54	1:28	12:26	2	13
2/16/02	13:53	1:29	12:24	2	13
2/17/02	13:52	1:30	12:22	2	13
2/18/02	13:50	1:32	12:18	2	13
2/19/02	13:49	1:33	12:16	2	13
2/20/02	13:48	1:34	12:14	2	13
2/21/02	13:46	1:35	12:11	2	13
2/22/02	13:45	1:36	12:09	2	13
2/23/02	13:43	1:38	12:05	2	13
2/24/02	13:42	1:39	12:03	2	13
2/25/02	13:40	1:40	12:00	2	13
2/26/02	13:39	1:41	11:58	2	13
2/27/02	13:37	1:42	11:55	2	13
2/28/02	13:36	1:43	11:53	2	13
3/1/02	13:34	1:45	11:49	2	13
3/2/02	13:33	1:46	11:47	2	13
3/3/02	13:31	1:47	11:44	2	13
3/4/02	13:30	1:48	11:42	2	13
3/5/02	13:28	1:49	11:39	2	13
3/6/02	13:26	1:50	11:36	2	13
3/7/02	13:25	1:52	11:33	2	13
3/8/02	13:23	1:53	11:30	2	13
3/9/02	13:22	1:54	11:28	2	13
3/10/02	13:20	1:55	11:25	2	13
3/11/02	13:18	1:56	11:22	2	13
3/12/02	13:17	1:57	11:20	2	13
3/13/02	13:15	1:58	11:17	2	13
3/14/02	13:13	1:59	11:14	2	13

3/15/02	13:12	2:01	11:11	3	13
3/16/02	13:10	2:02	11:08	3	13
3/17/02	13:08	2:03	11:05	3	13
3/18/02	13:06	2:04	11:02	3	13
3/19/02	13:05	2:05	11:00	3	13
3/20/02	13:03	2:06	10:57	3	13
3/21/02	13:01	2:07	10:54	3	13
3/22/02	13:00	2:09	10:51	3	13

3/23/02	12:58	2:10	10:48	3	12
3/24/02	12:56	2:11	10:45	3	12
3/25/02	12:54	2:12	10:42	3	12
3/26/02	12:53	2:13	10:40	3	12
3/27/02	12:51	2:14	10:37	3	12
3/28/02	12:49	2:15	10:34	3	12
3/29/02	12:47	2:16	10:31	3	12
3/30/02	12:46	2:18	10:28	3	12
3/31/02	12:44	2:19	10:25	3	12
4/1/02	12:42	2:20	10:22	3	12
4/2/02	12:41	2:21	10:20	3	12
4/3/02	12:39	2:22	10:17	3	12
4/4/02	12:37	2:23	10:14	3	12
4/5/02	12:35	2:24	10:11	3	12
4/6/02	12:34	2:26	10:08	3	12
4/7/02	12:32	2:27	10:05	3	12
4/8/02	12:30	2:28	10:02	3	12
4/9/02	12:28	2:29	9:59	3	12
4/10/02	12:27	2:30	9:57	3	12
4/11/02	12:25	2:31	9:54	3	12
4/12/02	12:23	2:33	9:50	3	12
4/13/02	12:22	2:34	9:48	3	12
4/14/02	12:20	2:35	9:45	3	12
4/15/02	12:18	2:36	9:42	3	12
4/16/02	12:17	2:37	9:40	3	12
4/17/02	12:15	2:38	9:37	3	12
4/18/02	12:13	2:40	9:33	3	12
4/19/02	12:12	2:41	9:31	3	12
4/20/02	12:10	2:42	9:28	3	12
4/21/02	12:09	2:43	9:26	3	12
4/22/02	12:07	2:44	9:23	3	12
4/23/02	12:05	2:46	9:19	3	12
4/24/02	12:04	2:47	9:17	3	12
4/25/02	12:02	2:48	9:14	3	12
4/26/02	12:01	2:49	9:12	3	12

4/27/02	11:59	2:50	9:09	3	11
4/28/02	11:58	2:51	9:07	3	11
4/29/02	11:56	2:53	9:03	3	11
4/30/02	11:55	2:54	9:01	3	11
5/1/02	11:54	2:55	8:59	3	11
5/2/02	11:52	2:56	8:56	3	11
5/3/02	11:51	2:57	8:54	3	11
5/4/02	11:49	2:59	8:50	3	11

5/5/02	11:48	3:00	8:48	4	11
5/6/02	11:47	3:01	8:46	4	11
5/7/02	11:45	3:02	8:43	4	11
5/8/02	11:44	3:03	8:41	4	11
5/9/02	11:43	3:04	8:39	4	11
5/10/02	11:42	3:06	8:36	4	11
5/11/02	11:40	3:07	8:33	4	11
5/12/02	11:39	3:08	8:31	4	11
5/13/02	11:38	3:09	8:29	4	11
5/14/02	11:37	3:10	8:27	4	11
5/15/02	11:36	3:11	8:25	4	11
5/16/02	11:35	3:12	8:23	4	11
5/17/02	11:34	3:14	8:20	4	11
5/18/02	11:33	3:15	8:18	4	11
5/19/02	11:32	3:16	8:16	4	11
5/20/02	11:31	3:17	8:14	4	11
5/21/02	11:30	3:18	8:12	4	11
5/22/02	11:29	3:19	8:10	4	11
5/23/02	11:28	3:20	8:08	4	11
5/24/02	11:27	3:21	8:06	4	11
5/25/02	11:26	3:22	8:04	4	11
5/26/02	11:26	3:23	8:03	4	11
5/27/02	11:25	3:24	8:01	4	11
5/28/02	11:24	3:25	7:59	4	11
5/29/02	11:23	3:26	7:57	4	11
5/30/02	11:23	3:27	7:56	4	11
5/31/02	11:22	3:28	7:54	4	11
6/1/02	11:22	3:28	7:54	4	11
6/2/02	11:21	3:29	7:52	4	11
6/3/02	11:21	3:30	7:51	4	11
6/4/02	11:20	3:31	7:49	4	11
6/5/02	11:20	3:32	7:48	4	11
6/6/02	11:19	3:32	7:47	4	11
6/7/02	11:19	3:33	7:46	4	11
6/8/02	11:19	3:34	7:45	4	11
6/9/02	11:18	3:34	7:44	4	11
6/10/02	11:18	3:35	7:43	4	11
6/11/02	11:18	3:36	7:42	4	11
6/12/02	11:18	3:36	7:42	4	11
6/13/02	11:18	3:37	7:41	4	11
6/14/02	11:18	3:37	7:41	4	11
6/15/02	11:18	3:38	7:40	4	11
6/16/02	11:18	3:38	7:40	4	11
6/17/02	11:18	3:39	7:39	4	11
6/18/02	11:18	3:39	7:39	4	11
6/19/02	11:18	3:39	7:39	4	11
6/20/02	11:18	3:40	7:38	4	11
6/21/02	11:18	3:40	7:38	4	11
6/22/02	11:19	3:40	7:39	4	11
6/23/02	11:19	3:40	7:39	4	11
6/24/02	11:19	3:40	7:39	4	11
6/25/02	11:20	3:40	7:40	4	11
6/26/02	11:20	3:41	7:39	4	11
6/27/02	11:20	3:41	7:39	4	11
6/28/02	11:21	3:41	7:40	4	11
6/29/02	11:21	3:40	7:41	4	11
6/30/02	11:22	3:40	7:42	4	11
7/1/02	11:22	3:40	7:42	4	11
7/2/02	11:23	3:40	7:43	4	11
7/3/02	11:23	3:40	7:43	4	11
7/4/02	11:24	3:40	7:44	4	11
7/5/02	11:25	3:39	7:46	4	11
7/6/02	11:25	3:39	7:46	4	11
7/7/02	11:26	3:39	7:47	4	11
7/8/02	11:27	3:38	7:49	4	11
7/9/02	11:28	3:38	7:50	4	11
7/10/02	11:28	3:37	7:51	4	11
7/11/02	11:29	3:37	7:52	4	11
7/12/02	11:30	3:36	7:54	4	11
7/13/02	11:31	3:36	7:55	4	11
7/14/02	11:32	3:35	7:57	4	11
7/15/02	11:33	3:34	7:59	4	11
7/16/02	11:34	3:34	8:00	4	11
7/17/02	11:34	3:33	8:01	4	11
7/18/02	11:35	3:32	8:03	4	11
7/19/02	11:36	3:31	8:05	4	11
7/20/02	11:37	3:30	8:07	4	11
7/21/02	11:38	3:30	8:08	4	11
7/22/02	11:39	3:29	8:10	4	11
7/23/02	11:40	3:28	8:12	4	11
7/24/02	11:41	3:27	8:14	4	11
7/25/02	11:42	3:26	8:16	4	11
7/26/02	11:44	3:25	8:19	4	11
7/27/02	11:45	3:24	8:21	4	11
7/28/02	11:46	3:23	8:23	4	11
7/29/02	11:47	3:21	8:26	4	11
7/30/02	11:48	3:20	8:28	4	11
7/31/02	11:49	3:19	8:30	4	11
8/1/02	11:50	3:18	8:32	4	11
8/2/02	11:51	3:17	8:34	4	11
8/3/02	11:52	3:15	8:37	4	11
8/4/02	11:53	3:14	8:39	4	11
8/5/02	11:54	3:13	8:41	4	11
8/6/02	11:56	3:12	8:44	4	11
8/7/02	11:57	3:10	8:47	4	11
8/8/02	11:58	3:09	8:49	4	11
8/9/02	11:59	3:07	8:52	4	11

8/10/02	12:00	3:06	8:54	4	12
8/11/02	12:01	3:05	8:56	4	12
8/12/02	12:02	3:03	8:59	4	12
8/13/02	12:03	3:02	9:01	4	12
8/14/02	12:04	3:00	9:04	4	12

8/15/02	12:06	2:59	9:07	3	12
8/16/02	12:07	2:57	9:10	3	12
8/17/02	12:08	2:56	9:12	3	12
8/18/02	12:09	2:54	9:15	3	12
8/19/02	12:10	2:53	9:17	3	12
8/20/02	12:11	2:51	9:20	3	12
8/21/02	12:12	2:49	9:23	3	12
8/22/02	12:13	2:48	9:25	3	12
8/23/02	12:15	2:46	9:29	3	12
8/24/02	12:16	2:45	9:31	3	12
8/25/02	12:17	2:43	9:34	3	12
8/26/02	12:18	2:41	9:37	3	12
8/27/02	12:19	2:40	9:39	3	12
8/28/02	12:20	2:38	9:42	3	12
8/29/02	12:21	2:36	9:45	3	12
8/30/02	12:22	2:34	9:48	3	12
8/31/02	12:23	2:33	9:50	3	12
9/1/02	12:25	2:31	9:54	3	12
9/2/02	12:26	2:29	9:57	3	12
9/3/02	12:27	2:28	9:59	3	12
9/4/02	12:28	2:26	10:02	3	12
9/5/02	12:29	2:24	10:05	3	12
9/6/02	12:30	2:22	10:08	3	12
9/7/02	12:31	2:21	10:10	3	12
9/8/02	12:32	2:19	10:13	3	12
9/9/02	12:33	2:17	10:16	3	12
9/10/02	12:34	2:15	10:19	3	12
9/11/02	12:35	2:14	10:21	3	12
9/12/02	12:36	2:12	10:24	3	12
9/13/02	12:37	2:10	10:27	3	12
9/14/02	12:39	2:08	10:31	3	12
9/15/02	12:40	2:06	10:34	3	12
9/16/02	12:41	2:05	10:36	3	12
9/17/02	12:42	2:03	10:39	3	12
9/18/02	12:43	2:01	10:42	3	12

9/19/02	12:44	1:59	10:45	2	12
9/20/02	12:45	1:58	10:47	2	12
9/21/02	12:46	1:56	10:50	2	12
9/22/02	12:47	1:54	10:53	2	12
9/23/02	12:48	1:52	10:56	2	12
9/24/02	12:49	1:51	10:58	2	12
9/25/02	12:50	1:49	11:01	2	12
9/26/02	12:51	1:47	11:04	2	12
9/27/02	12:52	1:45	11:07	2	12
9/28/02	12:53	1:44	11:09	2	12
9/29/02	12:54	1:42	11:12	2	12
9/30/02	12:55	1:40	11:15	2	12
10/1/02	12:57	1:39	11:18	2	12
10/2/02	12:58	1:37	11:21	2	12
10/3/02	12:59	1:35	11:24	2	12

10/4/02	13:00	1:33	11:27	2	13
10/5/02	13:01	1:32	11:29	2	13
10/6/02	13:02	1:30	11:32	2	13
10/7/02	13:03	1:28	11:35	2	13
10/8/02	13:04	1:27	11:37	2	13
10/9/02	13:05	1:25	11:40	2	13
10/10/0213:06	1:23	11:43	2	13
10/11/0213:07	1:22	11:45	2	13
10/12/0213:08	1:20	11:48	2	13
10/13/0213:09	1:19	11:50	2	13
10/14/0213:10	1:17	11:53	2	13
10/15/0213:12	1:16	11:56	2	13
10/16/0213:13	1:14	11:59	2	13
10/17/0213:14	1:12	12:02	2	13
10/18/0213:15	1:11	12:04	2	13
10/19/0213:16	1:09	12:07	2	13
10/20/0213:17	1:08	12:09	2	13
10/21/0213:18	1:07	12:11	2	13
10/22/0213:19	1:05	12:14	2	13
10/23/0213:20	1:04	12:16	2	13
10/24/0213:22	1:02	12:20	2	13
10/25/0213:23	1:01	12:22	2	13
10/26/0213:24	1:00	12:24	2	13

10/27/0213:25	0:58	12:27	1	13
10/28/0213:26	0:57	12:29	1	13
10/29/0213:27	0:56	12:31	1	13
10/30/0213:28	0:54	12:34	1	13
10/31/0213:30	0:53	12:37	1	13
11/1/02	13:31	0:52	12:39	1	13
11/2/02	13:32	0:51	12:41	1	13
11/3/02	13:33	0:50	12:43	1	13
11/4/02	13:34	0:48	12:46	1	13
11/5/02	13:35	0:47	12:48	1	13
11/6/02	13:37	0:46	12:51	1	13
11/7/02	13:38	0:45	12:53	1	13
11/8/02	13:39	0:44	12:55	1	13
11/9/02	13:40	0:43	12:57	1	13
11/10/0213:41	0:42	12:59	1	13
11/11/0213:42	0:41	13:01	1	13
11/12/0213:43	0:40	13:03	1	13
11/13/0213:45	0:39	13:06	1	13
11/14/0213:46	0:38	13:08	1	13
11/15/0213:47	0:38	13:09	1	13
11/16/0213:48	0:37	13:11	1	13
11/17/0213:49	0:36	13:13	1	13
11/18/0213:50	0:35	13:15	1	13
11/19/0213:51	0:35	13:16	1	13
11/20/0213:53	0:34	13:19	1	13
11/21/0213:54	0:33	13:21	1	13
11/22/0213:55	0:33	13:22	1	13
11/23/0213:56	0:32	13:24	1	13
11/24/0213:57	0:32	13:25	1	13
11/25/0213:58	0:31	13:27	1	13
11/26/0213:59	0:31	13:28	1	13

11/27/0214:00	0:30	13:30	1	14
11/28/0214:01	0:30	13:31	1	14
11/29/0214:02	0:29	13:33	1	14
11/30/0214:03	0:29	13:34	1	14
12/1/02	14:04	0:29	13:35	1	14
12/2/02	14:05	0:29	13:36	1	14
12/3/02	14:06	0:28	13:38	1	14
12/4/02	14:07	0:28	13:39	1	14
12/5/02	14:08	0:28	13:40	1	14
12/6/02	14:09	0:28	13:41	1	14
12/7/02	14:10	0:28	13:42	1	14
12/8/02	14:11	0:28	13:43	1	14
12/9/02	14:11	0:28	13:43	1	14
12/10/0214:12	0:28	13:44	1	14
12/11/0214:13	0:28	13:45	1	14
12/12/0214:14	0:28	13:46	1	14
12/13/0214:15	0:28	13:47	1	14
12/14/0214:15	0:29	13:46	1	14
12/15/0214:16	0:29	13:47	1	14
12/16/0214:17	0:29	13:48	1	14
12/17/0214:17	0:29	13:48	1	14
12/18/0214:18	0:30	13:48	1	14
12/19/0214:19	0:30	13:49	1	14
12/20/0214:19	0:31	13:48	1	14
12/21/0214:20	0:31	13:49	1	14
12/22/0214:20	0:31	13:49	1	14
12/23/0214:21	0:32	13:49	1	14
12/24/0214:21	0:33	13:48	1	14
12/25/0214:21	0:33	13:48	1	14
12/26/0214:22	0:34	13:48	1	14
12/27/0214:22	0:34	13:48	1	14
12/28/0214:22	0:35	13:47	1	14
12/29/0214:23	0:36	13:47	1	14
12/30/0214:23	0:36	13:47	1	14
12/31/0214:23	0:37	13:46	1	14