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Astronomy

Dec. 12, 2017 Rise Solar Noon Set
Actual Time 7:15 AM PST 12:03 PM PST 4:51 PM PST
Civil Twilight 6:46 AM PST   5:20 PM PST
Nautical Twilight 6:13 AM PST   5:53 PM PST
Astronomical Twilight 5:41 AM PST   6:25 PM PST
Altitude -0.8° 29.1° -0.8°
Azimuth 119.0° 180.0° 240.9°
Hour Angle of the Sun 71.9° 71.9° -71.9°
Mean Anomaly of the Sun 338.27° 338.47° 338.67°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -100.02° -99.80° -99.58°
Sun Declination -23.12° -23.13° -23.14°
Moon 1:54 AM PST (12/12)   1:56 PM PST (12/12)
Length of Visible Light 10h 33m
Length of Day
9h 35m
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