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Astronomy

Dec. 12, 2017 Rise Solar Noon Set
Actual Time 7:26 AM PST 12:01 PM PST 4:37 PM PST
Civil Twilight 6:54 AM PST   5:08 PM PST
Nautical Twilight 6:19 AM PST   5:43 PM PST
Astronomical Twilight 5:45 AM PST   6:17 PM PST
Altitude -0.8° 25.1° -0.8°
Azimuth 120.9° 180.0° 239.1°
Hour Angle of the Sun 68.9° 68.9° -68.9°
Mean Anomaly of the Sun 338.28° 338.47° 338.66°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -100.02° -99.81° -99.59°
Sun Declination -23.12° -23.13° -23.14°
Moon 1:53 AM PST   1:52 PM PST
Length of Visible Light 10h 14m
Length of Day
9h 11m
Waning Crescent, 27% of the Moon is Illuminated
Dec 12
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter