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Astronomy

Jul. 21, 2017 Rise Solar Noon Set
Actual Time 6:01 AM MDT 1:11 PM MDT 8:20 PM MDT
Civil Twilight 5:31 AM MDT   8:50 PM MDT
Nautical Twilight 4:55 AM MDT   9:26 PM MDT
Astronomical Twilight 4:15 AM MDT   10:06 PM MDT
Altitude -0.8° 73.2° -0.8°
Azimuth 63.4° 180.0° 296.4°
Hour Angle of the Sun 107.5° 107.4° -107.4°
Mean Anomaly of the Sun 196.21° 196.51° 196.80°
Obliquity 23.43° 23.43° 23.43°
Right Ascension of the Sun 121.06° 121.35° 121.65°
Sun Declination 20.37° 20.31° 20.25°
Moon 4:12 AM MDT   6:49 PM MDT
Length of Visible Light 15h 18m
Length of Day
14h 19m
Waning Crescent, 4% of the Moon is Illuminated
Jul 21
Waning Crescent
Jul 23
New
Jul 30
First Quarter
Aug 7
Full
Aug 14
Last Quarter