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Astronomy

Dec. 12, 2017 Rise Solar Noon Set
Actual Time 7:16 AM MST 12:01 PM MST 4:47 PM MST
Civil Twilight 6:46 AM MST   5:16 PM MST
Nautical Twilight 6:13 AM MST   5:50 PM MST
Astronomical Twilight 5:41 AM MST   6:22 PM MST
Altitude -0.8° 28.3° -0.8°
Azimuth 119.4° 180.0° 240.6°
Hour Angle of the Sun 71.3° 71.3° -71.3°
Mean Anomaly of the Sun 338.23° 338.43° 338.62°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -100.07° -99.85° -99.63°
Sun Declination -23.11° -23.13° -23.14°
Moon 1:50 AM MST (12/12)   1:52 PM MST (12/12)
Length of Visible Light 10h 30m
Length of Day
9h 30m
Waning Crescent, 24% of the Moon is Illuminated
Dec 12
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter