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Astronomy

Dec. 13, 2017 Rise Solar Noon Set
Actual Time 10:46 AM AKST 12:43 PM AKST 2:41 PM AKST
Civil Twilight 9:23 AM AKST   4:04 PM AKST
Nautical Twilight 8:12 AM AKST   5:14 PM AKST
Astronomical Twilight 7:11 AM AKST   6:16 PM AKST
Altitude -0.8° 2.1° -0.8°
Azimuth 153.2° 180.0° 206.8°
Hour Angle of the Sun 29.4° 29.4° -29.3°
Mean Anomaly of the Sun 339.44° 339.52° 339.60°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -98.71° -98.62° -98.53°
Sun Declination -23.19° -23.20° -23.20°
Moon 4:16 AM AKST (12/13)   2:21 PM AKST (12/13)
Length of Visible Light 6h 40m
Length of Day
3h 54m
Waning Crescent, 14% of the Moon is Illuminated
Dec 14
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter