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Astronomy

Dec. 12, 2017 Rise Solar Noon Set
Actual Time 7:38 AM MST 11:58 AM MST 4:18 PM MST
Civil Twilight 7:04 AM MST   4:53 PM MST
Nautical Twilight 6:26 AM MST   5:31 PM MST
Astronomical Twilight 5:49 AM MST   6:07 PM MST
Altitude -0.8° 20.6° -0.8°
Azimuth 123.6° 180.0° 236.4°
Hour Angle of the Sun 65.0° 64.9° -64.9°
Mean Anomaly of the Sun 338.25° 338.43° 338.60°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -100.05° -99.85° -99.65°
Sun Declination -23.11° -23.13° -23.14°
Moon 1:49 AM MST   1:45 PM MST
Length of Visible Light 9h 49m
Length of Day
8h 39m
Waning Crescent, 25% of the Moon is Illuminated
Dec 12
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter