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Astronomy

Dec. 12, 2017 Rise Solar Noon Set
Actual Time 7:41 AM PST 11:55 AM PST 4:09 PM PST
Civil Twilight 7:05 AM PST   4:45 PM PST
Nautical Twilight 6:25 AM PST   5:24 PM PST
Astronomical Twilight 5:48 AM PST   6:02 PM PST
Altitude -0.8° 19.1° -0.8°
Azimuth 124.6° 180.0° 235.4°
Hour Angle of the Sun 63.5° 63.5° -63.5°
Mean Anomaly of the Sun 338.29° 338.46° 338.64°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -100.01° -99.81° -99.62°
Sun Declination -23.12° -23.13° -23.14°
Moon 1:48 AM PST   1:42 PM PST
Length of Visible Light 9h 40m
Length of Day
8h 28m
Waning Crescent, 24% of the Moon is Illuminated
Dec 12
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter