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Astronomy

Jul. 21, 2017 Rise Solar Noon Set
Actual Time 5:38 AM MDT 1:01 PM MDT 8:23 PM MDT
Civil Twilight 5:06 AM MDT   8:55 PM MDT
Nautical Twilight 4:25 AM MDT   9:36 PM MDT
Astronomical Twilight 3:38 AM MDT   10:23 PM MDT
Altitude -0.8° 68.5° -0.8°
Azimuth 61.3° 180.0° 298.5°
Hour Angle of the Sun 110.7° 110.6° -110.5°
Mean Anomaly of the Sun 196.20° 196.50° 196.80°
Obliquity 23.43° 23.43° 23.43°
Right Ascension of the Sun 121.04° 121.35° 121.65°
Sun Declination 20.37° 20.31° 20.25°
Moon 3:49 AM MDT   6:51 PM MDT
Length of Visible Light 15h 49m
Length of Day
14h 44m
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