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Astronomy

Dec. 12, 2017 Rise Solar Noon Set
Actual Time 7:47 AM PST 12:03 PM PST 4:18 PM PST
Civil Twilight 7:11 AM PST   4:54 PM PST
Nautical Twilight 6:32 AM PST   5:33 PM PST
Astronomical Twilight 5:55 AM PST   6:10 PM PST
Altitude -0.8° 19.6° -0.8°
Azimuth 124.3° 180.0° 235.7°
Hour Angle of the Sun 63.9° 63.9° -63.9°
Mean Anomaly of the Sun 338.29° 338.47° 338.64°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -100.00° -99.80° -99.61°
Sun Declination -23.12° -23.13° -23.14°
Moon 1:56 AM PST (12/12)   1:50 PM PST (12/12)
Length of Visible Light 9h 42m
Length of Day
8h 31m
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