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Astronomy

Oct. 21, 2017 Rise Solar Noon Set
Actual Time 7:34 AM MDT 12:56 PM MDT 6:17 PM MDT
Civil Twilight 7:05 AM MDT   6:46 PM MDT
Nautical Twilight 6:31 AM MDT   7:20 PM MDT
Astronomical Twilight 5:57 AM MDT   7:53 PM MDT
Altitude -0.8° 35.0° -0.8°
Azimuth 104.4° 180.0° 255.4°
Hour Angle of the Sun 80.5° 80.4° -80.3°
Mean Anomaly of the Sun 286.95° 287.17° 287.39°
Obliquity 23.43° 23.43° 23.43°
Right Ascension of the Sun -153.67° -153.45° -153.24°
Sun Declination -10.88° -10.96° -11.04°
Moon 9:15 AM MDT (10/21)   7:47 PM MDT (10/21)
Length of Visible Light 11h 41m
Length of Day
10h 43m
Waxing Crescent, 6% of the Moon is Illuminated
Oct 22
Waxing Crescent
Oct 27
First Quarter
Nov 4
Full
Nov 10
Last Quarter
Nov 18
New