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Astronomy

Dec. 17, 2017 Rise Solar Noon Set
Actual Time 7:40 AM MST 11:55 AM MST 4:10 PM MST
Civil Twilight 7:04 AM MST   4:45 PM MST
Nautical Twilight 6:25 AM MST   5:24 PM MST
Astronomical Twilight 5:48 AM MST   6:02 PM MST
Altitude -0.8° 19.5° -0.8°
Azimuth 124.6° 180.0° 235.4°
Hour Angle of the Sun 63.8° 63.8° -63.8°
Mean Anomaly of the Sun 343.18° 343.35° 343.53°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -94.52° -94.33° -94.13°
Sun Declination -23.37° -23.38° -23.38°
Moon 6:49 AM MST   4:13 PM MST
Length of Visible Light 9h 41m
Length of Day
8h 30m
Waning Crescent, 1% of the Moon is Illuminated
Dec 17
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter