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Astronomy

Dec. 16, 2017 Rise Solar Noon Set
Actual Time 7:46 AM PST 12:02 PM PST 4:19 PM PST
Civil Twilight 7:10 AM PST   4:54 PM PST
Nautical Twilight 6:32 AM PST   5:33 PM PST
Astronomical Twilight 5:55 AM PST   6:10 PM PST
Altitude -0.8° 19.8° -0.8°
Azimuth 124.3° 180.0° 235.7°
Hour Angle of the Sun 64.1° 64.1° -64.1°
Mean Anomaly of the Sun 342.24° 342.41° 342.59°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -95.58° -95.38° -95.19°
Sun Declination -23.34° -23.34° -23.35°
Moon 6:02 AM PST   3:46 PM PST
Length of Visible Light 9h 43m
Length of Day
8h 32m
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