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Astronomy

Dec. 16, 2017 Rise Solar Noon Set
Actual Time 7:12 AM PST 11:55 AM PST 4:39 PM PST
Civil Twilight 6:42 AM PST   5:09 PM PST
Nautical Twilight 6:08 AM PST   5:42 PM PST
Astronomical Twilight 5:36 AM PST   6:15 PM PST
Altitude -0.8° 27.8° -0.8°
Azimuth 119.8° 180.0° 240.2°
Hour Angle of the Sun 70.9° 70.9° -70.9°
Mean Anomaly of the Sun 342.21° 342.41° 342.60°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -95.61° -95.39° -95.17°
Sun Declination -23.33° -23.34° -23.35°
Moon 5:35 AM PST   3:59 PM PST
Length of Visible Light 10h 27m
Length of Day
9h 27m
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