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Astronomy

Dec. 16, 2017 Rise Solar Noon Set
Actual Time 6:52 AM PST 11:48 AM PST 4:44 PM PST
Civil Twilight 6:24 AM PST   5:12 PM PST
Nautical Twilight 5:53 AM PST   5:43 PM PST
Astronomical Twilight 5:22 AM PST   6:14 PM PST
Altitude -0.8° 32.2° -0.8°
Azimuth 118.1° 180.0° 241.9°
Hour Angle of the Sun 73.9° 73.9° -73.9°
Mean Anomaly of the Sun 342.20° 342.40° 342.60°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -95.62° -95.39° -95.17°
Sun Declination -23.33° -23.34° -23.35°
Moon 5:19 AM PST   4:01 PM PST
Length of Visible Light 10h 47m
Length of Day
9h 51m
Waning Crescent, 3% of the Moon is Illuminated
Dec 16
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter