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Astronomy

Dec. 15, 2017 Rise Solar Noon Set
Actual Time 6:59 AM PST 11:52 AM PST 4:45 PM PST
Civil Twilight 6:31 AM PST   5:13 PM PST
Nautical Twilight 5:59 AM PST   5:45 PM PST
Astronomical Twilight 5:28 AM PST   6:16 PM PST
Altitude -0.8° 31.0° -0.8°
Azimuth 118.4° 180.0° 241.5°
Hour Angle of the Sun 73.2° 73.2° -73.1°
Mean Anomaly of the Sun 341.22° 341.42° 341.62°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -96.72° -96.50° -96.27°
Sun Declination -23.29° -23.30° -23.31°
Moon 4:31 AM PST   3:25 PM PST
Length of Visible Light 10h 42m
Length of Day
9h 45m
Waning Crescent, 7% of the Moon is Illuminated
Dec 15
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter