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Astronomy

Dec. 12, 2017 Rise Solar Noon Set
Actual Time 7:37 AM PST 12:11 PM PST 4:44 PM PST
Civil Twilight 7:06 AM PST   5:16 PM PST
Nautical Twilight 6:30 AM PST   5:52 PM PST
Astronomical Twilight 5:56 AM PST   6:26 PM PST
Altitude -0.8° 24.4° -0.8°
Azimuth 121.2° 180.0° 238.7°
Hour Angle of the Sun 68.4° 68.3° -68.3°
Mean Anomaly of the Sun 338.29° 338.48° 338.66°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -100.01° -99.80° -99.59°
Sun Declination -23.12° -23.13° -23.14°
Moon 2:03 AM PST (12/12)   2:01 PM PST (12/12)
Length of Visible Light 10h 10m
Length of Day
9h 06m
Waning Crescent, 21% of the Moon is Illuminated
Dec 13
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter