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Astronomy

Dec. 13, 2017 Rise Solar Noon Set
Actual Time 7:11 AM CST 11:52 AM CST 4:33 PM CST
Civil Twilight 6:40 AM CST   5:04 PM CST
Nautical Twilight 6:06 AM CST   5:38 PM CST
Astronomical Twilight 5:33 AM CST   6:10 PM CST
Altitude -0.8° 27.0° -0.8°
Azimuth 120.0° 180.0° 239.9°
Hour Angle of the Sun 70.3° 70.3° -70.3°
Mean Anomaly of the Sun 339.17° 339.37° 339.56°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -99.02° -98.80° -98.59°
Sun Declination -23.18° -23.19° -23.20°
Moon 2:37 AM CST   2:10 PM CST
Length of Visible Light 10h 23m
Length of Day
9h 22m
Waning Crescent, 19% of the Moon is Illuminated
Dec 13
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter