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Astronomy

Dec. 16, 2017 Rise Solar Noon Set
Actual Time 7:39 AM PST 12:09 PM PST 4:38 PM PST
Civil Twilight 7:07 AM PST   5:10 PM PST
Nautical Twilight 6:31 AM PST   5:47 PM PST
Astronomical Twilight 5:56 AM PST   6:21 PM PST
Altitude -0.8° 23.3° -0.8°
Azimuth 122.1° 180.0° 237.9°
Hour Angle of the Sun 67.3° 67.3° -67.3°
Mean Anomaly of the Sun 342.23° 342.42° 342.60°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -95.58° -95.38° -95.17°
Sun Declination -23.34° -23.34° -23.35°
Moon 5:59 AM PST   4:02 PM PST
Length of Visible Light 10h 03m
Length of Day
8h 58m
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