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Astronomy

Dec. 12, 2017 Rise Solar Noon Set
Actual Time 10:30 AM -03 11:03 AM -03 11:35 AM -03
Civil Twilight 8:15 AM -03   1:50 PM -03
Nautical Twilight 6:49 AM -03   3:16 PM -03
Astronomical Twilight 5:38 AM -03   4:27 PM -03
Altitude -1.1° -0.9° -1.1°
Azimuth 172.5° 180.0° 187.5°
Hour Angle of the Sun 8.1° 8.1° -8.1°
Mean Anomaly of the Sun 338.20° 338.22° 338.25°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -100.11° -100.08° -100.06°
Sun Declination -23.11° -23.11° -23.11°
Moon 12:45 AM -03 (12/12)   12:26 PM -03 (12/12)
Length of Visible Light 5h 35m
Length of Day
1h 04m
Waning Crescent, 23% of the Moon is Illuminated
Dec 12
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter