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Astronomy

Dec. 17, 2017 Rise Solar Noon Set
Actual Time 7:45 AM PST 11:58 AM PST 4:12 PM PST
Civil Twilight 7:09 AM PST   4:48 PM PST
Nautical Twilight 6:30 AM PST   5:27 PM PST
Astronomical Twilight 5:52 AM PST   6:04 PM PST
Altitude -0.8° 19.1° -0.8°
Azimuth 124.9° 180.0° 235.1°
Hour Angle of the Sun 63.3° 63.3° -63.3°
Mean Anomaly of the Sun 343.22° 343.39° 343.57°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -94.47° -94.28° -94.08°
Sun Declination -23.37° -23.38° -23.38°
Moon 6:57 AM PST (12/17)   4:17 PM PST (12/17)
Length of Visible Light 9h 38m
Length of Day
8h 26m
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