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Astronomy

Dec. 12, 2017 Rise Solar Noon Set
Actual Time 7:29 AM MST 11:56 AM MST 4:22 PM MST
Civil Twilight 6:55 AM MST   4:56 PM MST
Nautical Twilight 6:19 AM MST   5:32 PM MST
Astronomical Twilight 5:43 AM MST   6:08 PM MST
Altitude -0.8° 22.5° -0.8°
Azimuth 122.3° 180.0° 237.6°
Hour Angle of the Sun 66.7° 66.7° -66.7°
Mean Anomaly of the Sun 338.24° 338.42° 338.61°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -100.06° -99.86° -99.65°
Sun Declination -23.11° -23.13° -23.14°
Moon 1:45 AM MST   1:44 PM MST
Length of Visible Light 10h 00m
Length of Day
8h 53m
Waning Crescent, 29% of the Moon is Illuminated
Dec 12
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter