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Astronomy

Dec. 12, 2017 Rise Solar Noon Set
Actual Time 7:17 AM CST 11:43 AM CST 4:09 PM CST
Civil Twilight 6:44 AM CST   4:43 PM CST
Nautical Twilight 6:07 AM CST   5:19 PM CST
Astronomical Twilight 5:31 AM CST   5:55 PM CST
Altitude -0.8° 22.2° -0.8°
Azimuth 122.5° 180.0° 237.5°
Hour Angle of the Sun 66.5° 66.4° -66.4°
Mean Anomaly of the Sun 338.19° 338.37° 338.56°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -100.11° -99.91° -99.71°
Sun Declination -23.11° -23.12° -23.14°
Moon 1:30 AM CST   1:30 PM CST
Length of Visible Light 9h 58m
Length of Day
8h 51m
Waning Crescent, 30% of the Moon is Illuminated
Dec 12
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter