Latitude:   41° 48' 57" N
   Longitude: 113° 20' 00" W
   Time Zone: (GMT-07:00) Mountain Time
   Daylight Savings Time: Automatic

           ------Twilight-----                   ------Twilight----- Daylight
   Date    Astro  Naut   Civil Sunrise  Sunset   Civil  Naut   Astro  Hours
  --------------------------------------------------------------------------
 12/09/09  6:09a  6:43a  7:18a   7:49a   5:03p   5:34p  6:09p  6:43p   9:13