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Astronomy

Dec. 12, 2017 Rise Solar Noon Set
Actual Time 7:47 AM CST 12:12 PM CST 4:38 PM CST
Civil Twilight 7:13 AM CST   5:11 PM CST
Nautical Twilight 6:36 AM CST   5:48 PM CST
Astronomical Twilight 6:01 AM CST   6:24 PM CST
Altitude -0.8° 22.1° -0.8°
Azimuth 122.6° 180.0° 237.4°
Hour Angle of the Sun 66.4° 66.4° -66.3°
Mean Anomaly of the Sun 338.21° 338.39° 338.58°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -100.09° -99.89° -99.69°
Sun Declination -23.11° -23.12° -23.14°
Moon 2:00 AM CST (12/12)   1:59 PM CST (12/12)
Length of Visible Light 9h 58m
Length of Day
8h 51m
Waning Crescent, 24% of the Moon is Illuminated
Dec 12
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter