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Astronomy

Dec. 17, 2017 Rise Solar Noon Set
Actual Time 7:17 AM PST 11:59 AM PST 4:40 PM PST
Civil Twilight 6:47 AM PST   5:10 PM PST
Nautical Twilight 6:13 AM PST   5:44 PM PST
Astronomical Twilight 5:40 AM PST   6:17 PM PST
Altitude -0.8° 27.1° -0.8°
Azimuth 120.2° 180.0° 239.8°
Hour Angle of the Sun 70.4° 70.4° -70.3°
Mean Anomaly of the Sun 343.20° 343.39° 343.59°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -94.49° -94.28° -94.06°
Sun Declination -23.37° -23.38° -23.38°
Moon 6:34 AM PST (12/17)   4:41 PM PST (12/17)
Length of Visible Light 10h 23m
Length of Day
9h 23m
Waning Crescent, 0% of the Moon is Illuminated
Dec 17
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter