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Astronomy

Dec. 12, 2017 Rise Solar Noon Set
Actual Time 7:25 AM PST 11:42 AM PST 3:58 PM PST
Civil Twilight 6:50 AM PST   4:34 PM PST
Nautical Twilight 6:11 AM PST   5:12 PM PST
Astronomical Twilight 5:34 AM PST   5:49 PM PST
Altitude -0.8° 19.8° -0.8°
Azimuth 124.1° 180.0° 235.8°
Hour Angle of the Sun 64.2° 64.1° -64.1°
Mean Anomaly of the Sun 338.28° 338.46° 338.63°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -100.02° -99.82° -99.62°
Sun Declination -23.12° -23.13° -23.14°
Moon 1:34 AM PST   1:29 PM PST
Length of Visible Light 9h 44m
Length of Day
8h 33m
Waning Crescent, 26% of the Moon is Illuminated
Dec 12
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter