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Astronomy

Sep. 20, 2017 Rise Solar Noon Set
Actual Time 6:47 AM MDT 12:55 PM MDT 7:01 PM MDT
Civil Twilight 6:20 AM MDT   7:28 PM MDT
Nautical Twilight 5:49 AM MDT   8:00 PM MDT
Astronomical Twilight 5:16 AM MDT   8:32 PM MDT
Altitude -0.8° 50.8° -0.8°
Azimuth 88.1° 180.0° 271.6°
Hour Angle of the Sun 91.8° 91.8° -91.7°
Mean Anomaly of the Sun 256.37° 256.62° 256.87°
Obliquity 23.43° 23.43° 23.43°
Right Ascension of the Sun 177.94° 178.16° 178.39°
Sun Declination 0.89° 0.80° 0.70°
Moon 7:07 AM MDT   7:37 PM MDT
Length of Visible Light 13h 07m
Length of Day
12h 13m
New Moon, 0% of the Moon is Illuminated
Sep 20
New Moon
Sep 27
First Quarter
Oct 5
Full
Oct 12
Last Quarter
Oct 19
New