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Astronomy

Dec. 12, 2017 Rise Solar Noon Set
Actual Time 7:27 AM PST 11:42 AM PST 3:57 PM PST
Civil Twilight 6:52 AM PST   4:33 PM PST
Nautical Twilight 6:12 AM PST   5:12 PM PST
Astronomical Twilight 5:35 AM PST   5:49 PM PST
Altitude -0.8° 19.3° -0.8°
Azimuth 124.5° 180.0° 235.5°
Hour Angle of the Sun 63.7° 63.7° -63.6°
Mean Anomaly of the Sun 338.28° 338.46° 338.63°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -100.02° -99.82° -99.62°
Sun Declination -23.12° -23.13° -23.14°
Moon 1:35 AM PST   1:29 PM PST
Length of Visible Light 9h 41m
Length of Day
8h 29m
Waning Crescent, 28% of the Moon is Illuminated
Dec 12
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter