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Astronomy

Dec. 12, 2017 Rise Solar Noon Set
Actual Time 6:52 AM MST 11:48 AM MST 4:44 PM MST
Civil Twilight 6:24 AM MST   5:12 PM MST
Nautical Twilight 5:53 AM MST   5:43 PM MST
Astronomical Twilight 5:22 AM MST   6:14 PM MST
Altitude -0.8° 32.1° -0.8°
Azimuth 117.9° 180.0° 242.1°
Hour Angle of the Sun 73.9° 73.9° -73.9°
Mean Anomaly of the Sun 338.22° 338.42° 338.62°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -100.09° -99.86° -99.63°
Sun Declination -23.11° -23.13° -23.14°
Moon 1:35 AM MST   1:40 PM MST
Length of Visible Light 10h 47m
Length of Day
9h 51m
Waning Crescent, 26% of the Moon is Illuminated
Dec 12
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter