Time Columbine
10:42:58
Sunrise: 06:35:30 
Sunset: 17:50:1801:42:58
20:42:58
14:42:58
23:12:58
11:42:58
01:42:58
22:42:58
01:42:58
01:42:58
23:12:58
20:42:58
01:42:58
23:42:58
02:42:58
14:42:58
Time difference between Columbine and major cities
+7
+7
+7
+4
+4
+4
+4
+3
+2
+2
+2
+1
-1