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Astronomy

Dec. 13, 2017 Rise Solar Noon Set
Actual Time 6:54 AM CST 12:18 PM CST 5:42 PM CST
Civil Twilight 6:30 AM CST   6:06 PM CST
Nautical Twilight 6:02 AM CST   6:34 PM CST
Astronomical Twilight 5:35 AM CST   7:01 PM CST
Altitude -0.8° 44.5° -0.8°
Azimuth 114.8° 180.0° 245.2°
Hour Angle of the Sun 80.9° 80.9° -80.9°
Mean Anomaly of the Sun 338.59° 338.81° 339.03°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -99.67° -99.42° -99.18°
Sun Declination -23.14° -23.15° -23.17°
Moon 2:24 AM CST (12/13)   2:30 PM CST (12/13)
Length of Visible Light 11h 36m
Length of Day
10h 47m
Waning Crescent, 25% of the Moon is Illuminated
Dec 12
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter