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Astronomy

Jul. 21, 2017 Rise Solar Noon Set
Actual Time 5:30 AM MDT 1:01 PM MDT 8:32 PM MDT
Civil Twilight 4:56 AM MDT   9:06 PM MDT
Nautical Twilight 4:11 AM MDT   9:51 PM MDT
Astronomical Twilight 3:18 AM MDT   10:43 PM MDT
Altitude -0.8° 65.8° -0.8°
Azimuth 59.8° 180.0° 300.0°
Hour Angle of the Sun 112.7° 112.7° -112.6°
Mean Anomaly of the Sun 196.19° 196.50° 196.81°
Obliquity 23.43° 23.43° 23.43°
Right Ascension of the Sun 121.03° 121.35° 121.66°
Sun Declination 20.38° 20.31° 20.25°
Moon 3:42 AM MDT   6:59 PM MDT
Length of Visible Light 16h 10m
Length of Day
15h 01m
Waning Crescent, 5% of the Moon is Illuminated
Jul 21
Waning Crescent
Jul 23
New
Jul 30
First Quarter
Aug 7
Full
Aug 14
Last Quarter