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Astronomy

Dec. 17, 2017 Rise Solar Noon Set
Actual Time 7:47 AM MST 12:11 PM MST 4:35 PM MST
Civil Twilight 7:13 AM MST   5:09 PM MST
Nautical Twilight 6:36 AM MST   5:46 PM MST
Astronomical Twilight 6:01 AM MST   6:22 PM MST
Altitude -0.8° 21.9° -0.8°
Azimuth 123.0° 180.0° 237.0°
Hour Angle of the Sun 66.0° 66.0° -66.0°
Mean Anomaly of the Sun 343.18° 343.36° 343.54°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -94.52° -94.31° -94.11°
Sun Declination -23.37° -23.38° -23.38°
Moon 6:59 AM MST   4:37 PM MST
Length of Visible Light 9h 55m
Length of Day
8h 48m
Waning Crescent, 1% of the Moon is Illuminated
Dec 17
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter