2008 Dark Sky Calender
Number of hours of dark skies for N41 Lat W111 Lon for 24 hour period
Day starts at 4 UTC; Sun alt < -9°, Moon alt < -1°

Day | Month>	1	2	3	4	5	6	7	8	9	10	11	12	Total
1	8	9	8	8	7	6	6	8	10	10	11	10	101
2	9	10	9	9	7	7	8	8	9	10	10	10	106
3	9	11	9	9	7	8	8	8	9	9	10	9	106
4	10	12	10	10	8	8	7	7	9	9	9	8	107
5	11	12	10	10	8	7	7	7	8	9	8	7	104
6	12	12	11	9	8	6	6	7	8	8	7	6	100
7	13	12	11	9	7	5	6	6	7	7	6	5	94
8	13	10	10	8	5	5	6	6	6	6	5	3	83
9	13	10	10	7	5	4	5	5	5	5	3	2	74
10	12	9	9	5	4	4	5	5	4	4	2	1	64
11	11	8	8	4	3	4	4	4	3	2	1	0	52
12	10	7	7	3	3	3	4	3	2	1	0	0	43
13	9	6	4	3	2	3	3	2	1	0	0	1	34
14	8	4	3	2	2	2	3	1	0	0	1	2	28
15	7	3	2	2	2	2	2	0	0	0	2	3	25
16	6	2	1	1	1	1	1	0	0	0	3	3	19
17	4	1	1	0	1	1	0	0	0	1	3	4	16
18	3	0	0	0	1	0	0	0	0	2	4	6	16
19	2	0	0	0	0	0	0	0	1	2	5	7	17
20	1	0	0	0	0	1	0	0	1	3	7	8	21
21	0	0	0	1	0	1	1	0	2	4	8	9	26
22	0	2	0	0	1	2	1	1	3	5	9	10	34
23	1	2	1	1	2	2	1	2	4	7	10	11	44
24	2	3	1	2	3	3	2	3	5	8	11	12	55
25	2	4	3	3	3	3	2	4	7	9	12	13	65
26	3	5	4	4	4	3	3	5	8	10	13	14	76
27	4	5	5	5	4	4	3	6	10	11	13	14	84
28	5	6	6	5	5	4	4	8	11	12	13	13	92
29	6	7	6	6	5	5	5	9	11	12	12	12	96
30	7		7	6	5	5	6	10	11	12	11	11	91
31	8		8		6		8	10		12		0	52
Total	209	172	164	132	119	109	117	135	155	190	209	214	1925