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Astronomy

Dec. 16, 2017 Rise Solar Noon Set
Actual Time 7:23 AM MST 11:59 AM MST 4:36 PM MST
Civil Twilight 6:51 AM MST   5:07 PM MST
Nautical Twilight 6:17 AM MST   5:42 PM MST
Astronomical Twilight 5:43 AM MST   6:16 PM MST
Altitude -0.8° 25.5° -0.8°
Azimuth 120.9° 180.0° 239.1°
Hour Angle of the Sun 69.2° 69.1° -69.1°
Mean Anomaly of the Sun 342.18° 342.37° 342.56°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -95.64° -95.43° -95.22°
Sun Declination -23.33° -23.34° -23.35°
Moon 5:42 AM MST   3:56 PM MST
Length of Visible Light 10h 15m
Length of Day
9h 13m
Waning Crescent, 3% of the Moon is Illuminated
Dec 16
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter