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Astronomy

Dec. 17, 2017 Rise Solar Noon Set
Actual Time 7:53 AM PST 12:05 PM PST 4:17 PM PST
Civil Twilight 7:16 AM PST   4:54 PM PST
Nautical Twilight 6:37 AM PST   5:33 PM PST
Astronomical Twilight 5:59 AM PST   6:11 PM PST
Altitude -0.8° 18.8° -0.8°
Azimuth 125.1° 180.0° 234.9°
Hour Angle of the Sun 63.1° 63.1° -63.0°
Mean Anomaly of the Sun 343.23° 343.40° 343.57°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -94.47° -94.27° -94.08°
Sun Declination -23.37° -23.38° -23.38°
Moon 7:04 AM PST   4:23 PM PST
Length of Visible Light 9h 37m
Length of Day
8h 24m
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