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Astronomy

Dec. 17, 2017 Rise Solar Noon Set
Actual Time 6:45 AM PST 11:43 AM PST 4:41 PM PST
Civil Twilight 6:17 AM PST   5:09 PM PST
Nautical Twilight 5:46 AM PST   5:40 PM PST
Astronomical Twilight 5:16 AM PST   6:10 PM PST
Altitude -0.8° 33.2° -0.8°
Azimuth 117.8° 180.0° 242.2°
Hour Angle of the Sun 74.6° 74.6° -74.6°
Mean Anomaly of the Sun 343.18° 343.38° 343.59°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -94.52° -94.29° -94.06°
Sun Declination -23.37° -23.38° -23.38°
Moon 6:04 AM PST   4:39 PM PST
Length of Visible Light 10h 51m
Length of Day
9h 56m
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