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Astronomy

Dec. 17, 2017 Rise Solar Noon Set
Actual Time 7:24 AM MST 12:00 PM MST 4:36 PM MST
Civil Twilight 6:53 AM MST   5:08 PM MST
Nautical Twilight 6:18 AM MST   5:43 PM MST
Astronomical Twilight 5:45 AM MST   6:16 PM MST
Altitude -0.8° 25.3° -0.8°
Azimuth 121.0° 180.0° 239.0°
Hour Angle of the Sun 69.0° 69.0° -69.0°
Mean Anomaly of the Sun 343.17° 343.36° 343.54°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -94.53° -94.32° -94.11°
Sun Declination -23.37° -23.38° -23.38°
Moon 6:38 AM MST   4:36 PM MST
Length of Visible Light 10h 14m
Length of Day
9h 12m
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