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Astronomy

Sep. 21, 2017 Rise Solar Noon Set
Actual Time 6:47 AM MDT 12:53 PM MDT 6:58 PM MDT
Civil Twilight 6:20 AM MDT   7:25 PM MDT
Nautical Twilight 5:48 AM MDT   7:57 PM MDT
Astronomical Twilight 5:16 AM MDT   8:29 PM MDT
Altitude -0.8° 50.6° -0.8°
Azimuth 88.6° 180.0° 271.1°
Hour Angle of the Sun 91.5° 91.4° -91.3°
Mean Anomaly of the Sun 257.35° 257.60° 257.85°
Obliquity 23.43° 23.43° 23.43°
Right Ascension of the Sun 178.83° 179.06° 179.29°
Sun Declination 0.51° 0.41° 0.31°
Moon 8:08 AM MDT   8:07 PM MDT
Length of Visible Light 13h 05m
Length of Day
12h 11m
New Moon, 2% of the Moon is Illuminated
Sep 21
New Moon
Sep 27
First Quarter
Oct 5
Full
Oct 12
Last Quarter
Oct 19
New