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Astronomy

Dec. 11, 2017 Rise Solar Noon Set
Actual Time 7:47 AM MST 12:07 PM MST 4:27 PM MST
Civil Twilight 7:13 AM MST   5:02 PM MST
Nautical Twilight 6:34 AM MST   5:40 PM MST
Astronomical Twilight 5:58 AM MST   6:16 PM MST
Altitude -0.8° 20.5° -0.8°
Azimuth 123.5° 180.0° 236.4°
Hour Angle of the Sun 64.9° 64.9° -64.9°
Mean Anomaly of the Sun 337.27° 337.45° 337.62°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -101.15° -100.95° -100.75°
Sun Declination -23.04° -23.05° -23.07°
Moon 12:53 AM MST   1:28 PM MST
Length of Visible Light 9h 49m
Length of Day
8h 39m
Waning Crescent, 33% of the Moon is Illuminated
Dec 11
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter