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Astronomy

Jul. 21, 2017 Rise Solar Noon Set
Actual Time 5:47 AM MDT 1:08 PM MDT 8:29 PM MDT
Civil Twilight 5:15 AM MDT   9:01 PM MDT
Nautical Twilight 4:34 AM MDT   9:41 PM MDT
Astronomical Twilight 3:48 AM MDT   10:27 PM MDT
Altitude -0.8° 69.0° -0.8°
Azimuth 61.6° 180.0° 298.3°
Hour Angle of the Sun 110.3° 110.2° -110.2°
Mean Anomaly of the Sun 196.20° 196.51° 196.81°
Obliquity 23.43° 23.43° 23.43°
Right Ascension of the Sun 121.05° 121.35° 121.66°
Sun Declination 20.37° 20.31° 20.25°
Moon 3:59 AM MDT   6:57 PM MDT
Length of Visible Light 15h 46m
Length of Day
14h 41m
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