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Astronomy

Dec. 15, 2017 Rise Solar Noon Set
Actual Time 7:34 AM MST 12:23 PM MST 5:12 PM MST
Civil Twilight 7:05 AM MST   5:41 PM MST
Nautical Twilight 6:33 AM MST   6:14 PM MST
Astronomical Twilight 6:01 AM MST   6:45 PM MST
Altitude -0.8° 29.6° -0.8°
Azimuth 119.0° 180.0° 241.0°
Hour Angle of the Sun 72.2° 72.2° -72.2°
Mean Anomaly of the Sun 341.20° 341.40° 341.60°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -96.74° -96.52° -96.30°
Sun Declination -23.29° -23.30° -23.31°
Moon 5:03 AM MST   3:53 PM MST
Length of Visible Light 10h 35m
Length of Day
9h 37m
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