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Astronomy

Dec. 11, 2017 Rise Solar Noon Set
Actual Time 7:27 AM MST 11:55 AM MST 4:23 PM MST
Civil Twilight 6:54 AM MST   4:56 PM MST
Nautical Twilight 6:18 AM MST   5:32 PM MST
Astronomical Twilight 5:42 AM MST   6:07 PM MST
Altitude -0.8° 22.7° -0.8°
Azimuth 122.2° 180.0° 237.8°
Hour Angle of the Sun 66.9° 66.9° -66.9°
Mean Anomaly of the Sun 337.25° 337.44° 337.62°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -101.16° -100.96° -100.75°
Sun Declination -23.04° -23.05° -23.07°
Moon 12:41 AM MST   1:16 PM MST
Length of Visible Light 10h 01m
Length of Day
8h 55m
Waning Crescent, 35% of the Moon is Illuminated
Dec 11
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter