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Astronomy

Dec. 13, 2017 Rise Solar Noon Set
Actual Time 7:45 AM CST 12:18 PM CST 4:51 PM CST
Civil Twilight 7:13 AM CST   5:23 PM CST
Nautical Twilight 6:38 AM CST   5:59 PM CST
Astronomical Twilight 6:03 AM CST   6:33 PM CST
Altitude -0.8° 24.3° -0.8°
Azimuth 121.4° 180.0° 238.6°
Hour Angle of the Sun 68.2° 68.2° -68.2°
Mean Anomaly of the Sun 339.20° 339.38° 339.57°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -98.99° -98.78° -98.57°
Sun Declination -23.18° -23.19° -23.20°
Moon 3:07 AM CST   2:35 PM CST
Length of Visible Light 10h 09m
Length of Day
9h 05m
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