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Astronomy

Dec. 18, 2017 Rise Solar Noon Set
Actual Time 7:13 AM PST 11:57 AM PST 4:41 PM PST
Civil Twilight 6:43 AM PST   5:10 PM PST
Nautical Twilight 6:09 AM PST   5:44 PM PST
Astronomical Twilight 5:37 AM PST   6:16 PM PST
Altitude -0.8° 27.9° -0.8°
Azimuth 119.8° 180.0° 240.2°
Hour Angle of the Sun 71.0° 71.0° -70.9°
Mean Anomaly of the Sun 344.18° 344.38° 344.57°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -93.39° -93.17° -92.95°
Sun Declination -23.40° -23.40° -23.41°
Moon 7:21 AM PST   5:25 PM PST
Length of Visible Light 10h 27m
Length of Day
9h 27m
New Moon, 0% of the Moon is Illuminated
Dec 18
New Moon
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter
Jan 16
New