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Astronomy

Dec. 17, 2017 Rise Solar Noon Set
Actual Time 7:07 AM MST 12:00 PM MST 4:52 PM MST
Civil Twilight 6:39 AM MST   5:21 PM MST
Nautical Twilight 6:07 AM MST   5:53 PM MST
Astronomical Twilight 5:36 AM MST   6:24 PM MST
Altitude -0.8° 30.9° -0.8°
Azimuth 118.6° 180.0° 241.4°
Hour Angle of the Sun 73.1° 73.1° -73.1°
Mean Anomaly of the Sun 343.15° 343.35° 343.55°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -94.55° -94.32° -94.10°
Sun Declination -23.37° -23.38° -23.38°
Moon 6:24 AM MST   4:49 PM MST
Length of Visible Light 10h 41m
Length of Day
9h 44m
Waning Crescent, 0% of the Moon is Illuminated
Dec 17
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter