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Astronomy

Dec. 13, 2017 Rise Solar Noon Set
Actual Time 7:40 AM CST 12:11 PM CST 4:42 PM CST
Civil Twilight 7:07 AM CST   5:14 PM CST
Nautical Twilight 6:32 AM CST   5:50 PM CST
Astronomical Twilight 5:57 AM CST   6:25 PM CST
Altitude -0.8° 23.7° -0.8°
Azimuth 121.7° 180.0° 238.3°
Hour Angle of the Sun 67.8° 67.7° -67.7°
Mean Anomaly of the Sun 339.19° 339.38° 339.56°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -98.99° -98.79° -98.58°
Sun Declination -23.18° -23.19° -23.20°
Moon 3:00 AM CST   2:26 PM CST
Length of Visible Light 10h 06m
Length of Day
9h 02m
Waning Crescent, 20% of the Moon is Illuminated
Dec 13
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter