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Astronomy

Dec. 15, 2017 Rise Solar Noon Set
Actual Time 7:28 AM PST 12:10 PM PST 4:52 PM PST
Civil Twilight 6:58 AM PST   5:22 PM PST
Nautical Twilight 6:24 AM PST   5:56 PM PST
Astronomical Twilight 5:51 AM PST   6:29 PM PST
Altitude -0.8° 27.3° -0.8°
Azimuth 120.0° 180.0° 240.0°
Hour Angle of the Sun 70.5° 70.5° -70.5°
Mean Anomaly of the Sun 341.24° 341.43° 341.62°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -96.70° -96.48° -96.27°
Sun Declination -23.29° -23.30° -23.31°
Moon 4:56 AM PST   3:36 PM PST
Length of Visible Light 10h 24m
Length of Day
9h 24m
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