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Astronomy

Dec. 13, 2017 Rise Solar Noon Set
Actual Time 7:54 AM PST 12:03 PM PST 4:11 PM PST
Civil Twilight 7:17 AM PST   4:48 PM PST
Nautical Twilight 6:36 AM PST   5:29 PM PST
Astronomical Twilight 5:58 AM PST   6:07 PM PST
Altitude -0.8° 17.9° -0.8°
Azimuth 125.6° 180.0° 234.3°
Hour Angle of the Sun 62.1° 62.1° -62.1°
Mean Anomaly of the Sun 339.28° 339.46° 339.63°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -98.89° -98.70° -98.51°
Sun Declination -23.18° -23.19° -23.20°
Moon 3:02 AM PST (12/13)   2:13 PM PST (12/13)
Length of Visible Light 9h 31m
Length of Day
8h 17m
Waning Crescent, 14% of the Moon is Illuminated
Dec 14
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter