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Astronomy

Dec. 17, 2017 Rise Solar Noon Set
Actual Time 7:45 AM PST 11:55 AM PST 4:06 PM PST
Civil Twilight 7:08 AM PST   4:42 PM PST
Nautical Twilight 6:28 AM PST   5:22 PM PST
Astronomical Twilight 5:50 AM PST   6:00 PM PST
Altitude -0.8° 18.4° -0.8°
Azimuth 125.4° 180.0° 234.6°
Hour Angle of the Sun 62.6° 62.6° -62.6°
Mean Anomaly of the Sun 343.22° 343.39° 343.56°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -94.47° -94.28° -94.09°
Sun Declination -23.37° -23.38° -23.38°
Moon 6:56 AM PST   4:11 PM PST
Length of Visible Light 9h 34m
Length of Day
8h 20m
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