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Astronomy

Dec. 11, 2017 Rise Solar Noon Set
Actual Time 7:35 AM MST 12:07 PM MST 4:38 PM MST
Civil Twilight 7:03 AM MST   5:10 PM MST
Nautical Twilight 6:27 AM MST   5:46 PM MST
Astronomical Twilight 5:52 AM MST   6:21 PM MST
Altitude -0.8° 23.8° -0.8°
Azimuth 121.5° 180.0° 238.5°
Hour Angle of the Sun 67.9° 67.9° -67.8°
Mean Anomaly of the Sun 337.26° 337.45° 337.63°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -101.16° -100.95° -100.74°
Sun Declination -23.04° -23.05° -23.07°
Moon 12:54 AM MST (12/11)   1:28 PM MST (12/11)
Length of Visible Light 10h 07m
Length of Day
9h 03m
Waning Crescent, 33% of the Moon is Illuminated
Dec 11
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter