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Astronomy

Dec. 15, 2017 Rise Solar Noon Set
Actual Time 6:51 AM MST 11:52 AM MST 4:53 PM MST
Civil Twilight 6:24 AM MST   5:20 PM MST
Nautical Twilight 5:53 AM MST   5:51 PM MST
Astronomical Twilight 5:23 AM MST   6:21 PM MST
Altitude -0.8° 34.4° -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 341.17° 341.38° 341.58°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -96.78° -96.54° -96.31°
Sun Declination -23.29° -23.30° -23.31°
Moon 4:23 AM MST   3:29 PM MST
Length of Visible Light 10h 56m
Length of Day
10h 02m
Waning Crescent, 8% of the Moon is Illuminated
Dec 15
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter