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Astronomy

Dec. 15, 2017 Rise Solar Noon Set
Actual Time 8:06 AM MST 12:20 PM MST 4:34 PM MST
Civil Twilight 7:30 AM MST   5:10 PM MST
Nautical Twilight 6:51 AM MST   5:49 PM MST
Astronomical Twilight 6:13 AM MST   6:27 PM MST
Altitude -0.8° 19.2° -0.8°
Azimuth 124.7° 180.0° 235.3°
Hour Angle of the Sun 63.5° 63.5° -63.5°
Mean Anomaly of the Sun 341.22° 341.40° 341.57°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -96.72° -96.52° -96.33°
Sun Declination -23.29° -23.30° -23.31°
Moon 5:20 AM MST   3:28 PM MST
Length of Visible Light 9h 39m
Length of Day
8h 27m
Waning Crescent, 7% of the Moon is Illuminated
Dec 15
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter