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Astronomy

Dec. 15, 2017 Rise Solar Noon Set
Actual Time 7:37 AM PST 11:49 AM PST 4:01 PM PST
Civil Twilight 7:01 AM PST   4:37 PM PST
Nautical Twilight 6:21 AM PST   5:17 PM PST
Astronomical Twilight 5:43 AM PST   5:55 PM PST
Altitude -0.8° 18.7° -0.8°
Azimuth 125.1° 180.0° 234.9°
Hour Angle of the Sun 63.0° 63.0° -62.9°
Mean Anomaly of the Sun 341.24° 341.42° 341.59°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -96.69° -96.50° -96.31°
Sun Declination -23.29° -23.30° -23.31°
Moon 4:52 AM PST   2:56 PM PST
Length of Visible Light 9h 36m
Length of Day
8h 23m
Waning Crescent, 7% of the Moon is Illuminated
Dec 15
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter