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Astronomy

Sep. 21, 2017 Rise Solar Noon Set
Actual Time 6:41 AM MDT 12:48 PM MDT 6:53 PM MDT
Civil Twilight 6:12 AM MDT   7:22 PM MDT
Nautical Twilight 5:38 AM MDT   7:56 PM MDT
Astronomical Twilight 5:03 AM MDT   8:31 PM MDT
Altitude -0.8° 45.9° -0.8°
Azimuth 88.5° 180.0° 271.3°
Hour Angle of the Sun 91.7° 91.6° -91.5°
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° 179.28°
Sun Declination 0.51° 0.41° 0.31°
Moon 8:04 AM MDT   7:59 PM MDT
Length of Visible Light 13h 10m
Length of Day
12h 12m
New Moon, 1% of the Moon is Illuminated
Sep 21
New Moon
Sep 27
First Quarter
Oct 5
Full
Oct 12
Last Quarter
Oct 19
New