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Astronomy

Dec. 13, 2017 Rise Solar Noon Set
Actual Time 7:12 AM CST 11:57 AM CST 4:41 PM CST
Civil Twilight 6:42 AM CST   5:11 PM CST
Nautical Twilight 6:09 AM CST   5:44 PM CST
Astronomical Twilight 5:36 AM CST   6:17 PM CST
Altitude -0.8° 28.1° -0.8°
Azimuth 119.5° 180.0° 240.5°
Hour Angle of the Sun 71.2° 71.2° -71.2°
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° -98.58°
Sun Declination -23.18° -23.19° -23.20°
Moon 2:41 AM CST (12/13)   2:16 PM CST (12/13)
Length of Visible Light 10h 29m
Length of Day
9h 29m
Waning Crescent, 15% of the Moon is Illuminated
Dec 13
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter