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Astronomy

Dec. 12, 2017 Rise Solar Noon Set
Actual Time 7:37 AM PST 11:53 AM PST 4:09 PM PST
Civil Twilight 7:01 AM PST   4:45 PM PST
Nautical Twilight 6:22 AM PST   5:24 PM PST
Astronomical Twilight 5:45 AM PST   6:01 PM PST
Altitude -0.8° 19.7° -0.8°
Azimuth 124.2° 180.0° 235.8°
Hour Angle of the Sun 64.1° 64.0° -64.0°
Mean Anomaly of the Sun 338.29° 338.46° 338.64°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -100.01° -99.81° -99.62°
Sun Declination -23.12° -23.13° -23.14°
Moon 1:46 AM PST (12/12)   1:40 PM PST (12/12)
Length of Visible Light 9h 43m
Length of Day
8h 32m
Waning Crescent, 22% of the Moon is Illuminated
Dec 12
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter