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Astronomy

Dec. 16, 2017 Rise Solar Noon Set
Actual Time 6:50 AM PST 11:45 AM PST 4:41 PM PST
Civil Twilight 6:22 AM PST   5:09 PM PST
Nautical Twilight 5:51 AM PST   5:40 PM PST
Astronomical Twilight 5:20 AM PST   6:11 PM PST
Altitude -0.8° 32.0° -0.8°
Azimuth 118.1° 180.0° 241.9°
Hour Angle of the Sun 73.8° 73.8° -73.8°
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° -95.40° -95.17°
Sun Declination -23.33° -23.34° -23.35°
Moon 5:16 AM PST   3:58 PM PST
Length of Visible Light 10h 46m
Length of Day
9h 50m
Waning Crescent, 2% of the Moon is Illuminated
Dec 16
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter