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Astronomy

Dec. 15, 2017 Rise Solar Noon Set
Actual Time 7:42 AM PST 12:12 PM PST 4:41 PM PST
Civil Twilight 7:10 AM PST   5:14 PM PST
Nautical Twilight 6:34 AM PST   5:50 PM PST
Astronomical Twilight 5:59 AM PST   6:25 PM PST
Altitude -0.8° 23.3° -0.8°
Azimuth 122.1° 180.0° 237.9°
Hour Angle of the Sun 67.3° 67.3° -67.3°
Mean Anomaly of the Sun 341.25° 341.43° 341.62°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -96.69° -96.48° -96.28°
Sun Declination -23.29° -23.30° -23.31°
Moon 5:05 AM PST   3:30 PM PST
Length of Visible Light 10h 03m
Length of Day
8h 58m
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