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Astronomy

Jul. 21, 2017 Rise Solar Noon Set
Actual Time 5:29 AM MDT 1:00 PM MDT 8:30 PM MDT
Civil Twilight 4:54 AM MDT   9:04 PM MDT
Nautical Twilight 4:10 AM MDT   9:48 PM MDT
Astronomical Twilight 3:17 AM MDT   10:41 PM MDT
Altitude -0.8° 65.9° -0.8°
Azimuth 59.9° 180.0° 299.9°
Hour Angle of the Sun 112.7° 112.6° -112.5°
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° 121.34° 121.66°
Sun Declination 20.38° 20.31° 20.25°
Moon 3:41 AM MDT   6:57 PM MDT
Length of Visible Light 16h 09m
Length of Day
15h 00m
Waning Crescent, 3% of the Moon is Illuminated
Jul 21
Waning Crescent
Jul 23
New
Jul 30
First Quarter
Aug 7
Full
Aug 14
Last Quarter