Time Columbine
02:30:32
Sunrise: 07:18:27 
Sunset: 17:01:4817:30:32
12:30:32
06:30:32
15:00:32
03:30:32
17:30:32
14:30:32
17:30:32
17:30:32
15:00:32
12:30:32
17:30:32
15:30:32
18:30:32
06:30:32
Time difference between Columbine and major cities
+7
+7
+4
+4
+4
+4
+3
+2
+2
+2
+1
-1