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Astronomy

Dec. 17, 2017 Rise Solar Noon Set
Actual Time 7:16 AM PST 12:03 PM PST 4:50 PM PST
Civil Twilight 6:47 AM PST   5:19 PM PST
Nautical Twilight 6:14 AM PST   5:52 PM PST
Astronomical Twilight 5:42 AM PST   6:24 PM PST
Altitude -0.8° 29.0° -0.8°
Azimuth 119.3° 180.0° 240.6°
Hour Angle of the Sun 71.7° 71.7° -71.7°
Mean Anomaly of the Sun 343.20° 343.40° 343.59°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -94.50° -94.27° -94.05°
Sun Declination -23.37° -23.38° -23.38°
Moon 6:34 AM PST (12/17)   4:50 PM PST (12/17)
Length of Visible Light 10h 32m
Length of Day
9h 33m
Waning Crescent, 0% of the Moon is Illuminated
Dec 17
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter