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Astronomy

Dec. 15, 2017 Rise Solar Noon Set
Actual Time 7:11 AM MST 11:57 AM MST 4:43 PM MST
Civil Twilight 6:41 AM MST   5:12 PM MST
Nautical Twilight 6:08 AM MST   5:45 PM MST
Astronomical Twilight 5:36 AM MST   6:17 PM MST
Altitude -0.8° 28.6° -0.8°
Azimuth 119.4° 180.0° 240.6°
Hour Angle of the Sun 71.5° 71.5° -71.5°
Mean Anomaly of the Sun 341.19° 341.38° 341.58°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -96.76° -96.54° -96.32°
Sun Declination -23.29° -23.30° -23.31°
Moon 4:37 AM MST   3:24 PM MST
Length of Visible Light 10h 31m
Length of Day
9h 31m
Waning Crescent, 5% of the Moon is Illuminated
Dec 15
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter