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Astronomy

Dec. 15, 2017 Rise Solar Noon Set
Actual Time 7:33 AM MST 11:53 AM MST 4:12 PM MST
Civil Twilight 6:58 AM MST   4:47 PM MST
Nautical Twilight 6:20 AM MST   5:25 PM MST
Astronomical Twilight 5:44 AM MST   6:01 PM MST
Altitude -0.8° 20.6° -0.8°
Azimuth 123.7° 180.0° 236.3°
Hour Angle of the Sun 64.9° 64.9° -64.9°
Mean Anomaly of the Sun 341.20° 341.38° 341.56°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -96.74° -96.54° -96.34°
Sun Declination -23.29° -23.30° -23.31°
Moon 4:48 AM MST   3:03 PM MST
Length of Visible Light 9h 48m
Length of Day
8h 39m
Waning Crescent, 5% of the Moon is Illuminated
Dec 15
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter