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Astronomy

Oct. 20, 2017 Rise Solar Noon Set
Actual Time 7:45 AM MDT 1:12 PM MDT 6:39 PM MDT
Civil Twilight 7:17 AM MDT   7:07 PM MDT
Nautical Twilight 6:45 AM MDT   7:39 PM MDT
Astronomical Twilight 6:13 AM MDT   8:11 PM MDT
Altitude -0.8° 38.1° -0.8°
Azimuth 103.3° 180.0° 256.5°
Hour Angle of the Sun 81.8° 81.7° -81.6°
Mean Anomaly of the Sun 285.97° 286.20° 286.42°
Obliquity 23.43° 23.43° 23.43°
Right Ascension of the Sun -154.60° -154.39° -154.17°
Sun Declination -10.53° -10.61° -10.69°
Moon 8:28 AM MDT (10/20)   7:36 PM MDT (10/20)
Length of Visible Light 11h 49m
Length of Day
10h 53m
New Moon, 2% of the Moon is Illuminated
Oct 21
New Moon
Oct 27
First Quarter
Nov 4
Full
Nov 10
Last Quarter
Nov 18
New