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Astronomy

Dec. 15, 2017 Rise Solar Noon Set
Actual Time 7:15 AM PST 11:58 AM PST 4:40 PM PST
Civil Twilight 6:45 AM PST   5:10 PM PST
Nautical Twilight 6:11 AM PST   5:44 PM PST
Astronomical Twilight 5:39 AM PST   6:17 PM PST
Altitude -0.8° 27.4° -0.8°
Azimuth 119.9° 180.0° 240.0°
Hour Angle of the Sun 70.6° 70.6° -70.6°
Mean Anomaly of the Sun 341.23° 341.42° 341.62°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -96.71° -96.49° -96.28°
Sun Declination -23.29° -23.30° -23.31°
Moon 4:43 AM PST   3:24 PM PST
Length of Visible Light 10h 25m
Length of Day
9h 25m
Waning Crescent, 5% of the Moon is Illuminated
Dec 15
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter