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Astronomy

Dec. 13, 2017 Rise Solar Noon Set
Actual Time 7:36 AM CST 12:17 PM CST 4:57 PM CST
Civil Twilight 7:06 AM CST   5:27 PM CST
Nautical Twilight 6:32 AM CST   6:02 PM CST
Astronomical Twilight 5:59 AM CST   6:35 PM CST
Altitude -0.8° 26.6° -0.8°
Azimuth 120.2° 180.0° 239.7°
Hour Angle of the Sun 70.0° 70.0° -70.0°
Mean Anomaly of the Sun 339.19° 339.38° 339.57°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -99.00° -98.78° -98.57°
Sun Declination -23.18° -23.19° -23.20°
Moon 3:03 AM CST   2:35 PM CST
Length of Visible Light 10h 21m
Length of Day
9h 20m
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