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Astronomy

Dec. 16, 2017 Rise Solar Noon Set
Actual Time 7:25 AM PST 12:02 PM PST 4:39 PM PST
Civil Twilight 6:54 AM PST   5:10 PM PST
Nautical Twilight 6:19 AM PST   5:45 PM PST
Astronomical Twilight 5:46 AM PST   6:19 PM PST
Altitude -0.8° 25.7° -0.8°
Azimuth 120.8° 180.0° 239.2°
Hour Angle of the Sun 69.3° 69.3° -69.3°
Mean Anomaly of the Sun 342.22° 342.41° 342.60°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -95.60° -95.38° -95.17°
Sun Declination -23.34° -23.34° -23.35°
Moon 5:47 AM PST (12/16)   4:01 PM PST (12/16)
Length of Visible Light 10h 16m
Length of Day
9h 14m
Waning Crescent, 1% of the Moon is Illuminated
Dec 17
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter