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Astronomy

Dec. 12, 2017 Rise Solar Noon Set
Actual Time 8:54 AM -03 11:54 AM -03 2:54 PM -03
Civil Twilight 7:57 AM -03   3:51 PM -03
Nautical Twilight 7:01 AM -03   4:47 PM -03
Astronomical Twilight 6:09 AM -03   5:39 PM -03
Altitude -0.8° 6.9° -0.8°
Azimuth 139.4° 180.0° 220.5°
Hour Angle of the Sun 45.0° 45.0° -45.0°
Mean Anomaly of the Sun 338.14° 338.26° 338.38°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -100.18° -100.04° -99.90°
Sun Declination -23.11° -23.11° -23.12°
Moon 1:37 AM -03   1:28 PM -03
Length of Visible Light 7h 54m
Length of Day
6h 00m
Waning Crescent, 26% of the Moon is Illuminated
Dec 12
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter