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Astronomy

Dec. 16, 2017 Rise Solar Noon Set
Actual Time 6:48 AM PST 11:45 AM PST 4:42 PM PST
Civil Twilight 6:20 AM PST   5:10 PM PST
Nautical Twilight 5:49 AM PST   5:41 PM PST
Astronomical Twilight 5:19 AM PST   6:12 PM PST
Altitude -0.8° 32.7° -0.8°
Azimuth 117.9° 180.0° 242.1°
Hour Angle of the Sun 74.2° 74.2° -74.2°
Mean Anomaly of the Sun 342.20° 342.40° 342.60°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -95.62° -95.40° -95.17°
Sun Declination -23.33° -23.34° -23.35°
Moon 5:15 AM PST (12/16)   3:59 PM PST (12/16)
Length of Visible Light 10h 49m
Length of Day
9h 53m
Waning Crescent, 1% of the Moon is Illuminated
Dec 16
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter