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Astronomy

Dec. 11, 2017 Rise Solar Noon Set
Actual Time 7:36 AM PST 12:00 PM PST 4:24 PM PST
Civil Twilight 7:02 AM PST   4:58 PM PST
Nautical Twilight 6:25 AM PST   5:35 PM PST
Astronomical Twilight 5:49 AM PST   6:11 PM PST
Altitude -0.8° 21.6° -0.8°
Azimuth 122.8° 180.0° 237.1°
Hour Angle of the Sun 66.0° 65.9° -65.9°
Mean Anomaly of the Sun 337.30° 337.48° 337.66°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -101.11° -100.91° -100.71°
Sun Declination -23.04° -23.06° -23.07°
Moon 12:49 AM PST   1:22 PM PST
Length of Visible Light 9h 55m
Length of Day
8h 47m
Last Quarter, 39% of the Moon is Illuminated
Dec 11
Last Quarter
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter