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Astronomy

Dec. 12, 2017 Rise Solar Noon Set
Actual Time 7:44 AM PST 11:54 AM PST 4:04 PM PST
Civil Twilight 7:07 AM PST   4:41 PM PST
Nautical Twilight 6:27 AM PST   5:21 PM PST
Astronomical Twilight 5:49 AM PST   6:00 PM PST
Altitude -0.8° 18.2° -0.8°
Azimuth 125.3° 180.0° 234.7°
Hour Angle of the Sun 62.5° 62.5° -62.5°
Mean Anomaly of the Sun 338.29° 338.46° 338.64°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -100.00° -99.81° -99.62°
Sun Declination -23.12° -23.13° -23.14°
Moon 1:48 AM PST (12/12)   1:41 PM PST (12/12)
Length of Visible Light 9h 34m
Length of Day
8h 20m
Waning Crescent, 23% of the Moon is Illuminated
Dec 12
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter