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Astronomy

Dec. 15, 2017 Rise Solar Noon Set
Actual Time 7:15 AM PST 12:03 PM PST 4:51 PM PST
Civil Twilight 6:46 AM PST   5:20 PM PST
Nautical Twilight 6:13 AM PST   5:53 PM PST
Astronomical Twilight 5:42 AM PST   6:25 PM PST
Altitude -0.8° 29.2° -0.8°
Azimuth 119.1° 180.0° 240.8°
Hour Angle of the Sun 71.9° 71.9° -71.9°
Mean Anomaly of the Sun 341.23° 341.43° 341.62°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -96.71° -96.49° -96.27°
Sun Declination -23.29° -23.30° -23.31°
Moon 4:46 AM PST (12/15)   3:33 PM PST (12/15)
Length of Visible Light 10h 34m
Length of Day
9h 35m
Waning Crescent, 4% of the Moon is Illuminated
Dec 15
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter