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Astronomy

Dec. 11, 2017 Rise Solar Noon Set
Actual Time 7:08 AM MST 11:52 AM MST 4:36 PM MST
Civil Twilight 6:38 AM MST   5:06 PM MST
Nautical Twilight 6:05 AM MST   5:40 PM MST
Astronomical Twilight 5:32 AM MST   6:12 PM MST
Altitude -0.8° 27.9° -0.8°
Azimuth 119.5° 180.0° 240.5°
Hour Angle of the Sun 71.1° 71.0° -71.0°
Mean Anomaly of the Sun 337.24° 337.44° 337.63°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -101.18° -100.96° -100.74°
Sun Declination -23.04° -23.05° -23.07°
Moon 12:40 AM MST   1:13 PM MST
Length of Visible Light 10h 28m
Length of Day
9h 28m
Last Quarter, 37% of the Moon is Illuminated
Dec 11
Last Quarter
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter