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Astronomy

Dec. 15, 2017 Rise Solar Noon Set
Actual Time 7:13 AM MST 12:14 PM MST 5:16 PM MST
Civil Twilight 6:46 AM MST   5:43 PM MST
Nautical Twilight 6:15 AM MST   6:13 PM MST
Astronomical Twilight 5:45 AM MST   6:43 PM MST
Altitude -0.8° 34.3° -0.8°
Azimuth 117.3° 180.0° 242.7°
Hour Angle of the Sun 75.3° 75.3° -75.3°
Mean Anomaly of the Sun 341.19° 341.39° 341.60°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -96.76° -96.53° -96.30°
Sun Declination -23.29° -23.30° -23.31°
Moon 4:47 AM MST   3:52 PM MST
Length of Visible Light 10h 56m
Length of Day
10h 02m
Waning Crescent, 7% of the Moon is Illuminated
Dec 15
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter