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Astronomy

Dec. 11, 2017 Rise Solar Noon Set
Actual Time 6:46 AM MST 11:46 AM MST 4:46 PM MST
Civil Twilight 6:19 AM MST   5:13 PM MST
Nautical Twilight 5:48 AM MST   5:44 PM MST
Astronomical Twilight 5:18 AM MST   6:14 PM MST
Altitude -0.8° 33.7° -0.8°
Azimuth 117.3° 180.0° 242.7°
Hour Angle of the Sun 74.9° 74.9° -74.9°
Mean Anomaly of the Sun 337.23° 337.43° 337.64°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -101.19° -100.97° -100.74°
Sun Declination -23.04° -23.05° -23.07°
Moon 12:36 AM MST   1:06 PM MST
Length of Visible Light 10h 54m
Length of Day
9h 59m
Last Quarter, 38% of the Moon is Illuminated
Dec 11
Last Quarter
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter