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Astronomy

Dec. 15, 2017 Rise Solar Noon Set
Actual Time 7:53 AM MST 12:21 PM MST 4:49 PM MST
Civil Twilight 7:20 AM MST   5:22 PM MST
Nautical Twilight 6:44 AM MST   5:58 PM MST
Astronomical Twilight 6:09 AM MST   6:33 PM MST
Altitude -0.8° 22.8° -0.8°
Azimuth 122.3° 180.0° 237.7°
Hour Angle of the Sun 66.9° 66.9° -66.9°
Mean Anomaly of the Sun 341.21° 341.40° 341.58°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -96.73° -96.52° -96.32°
Sun Declination -23.29° -23.30° -23.31°
Moon 5:13 AM MST   3:37 PM MST
Length of Visible Light 10h 01m
Length of Day
8h 55m
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