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Astronomy

Sep. 21, 2017 Rise Solar Noon Set
Actual Time 6:33 AM MDT 12:39 PM MDT 6:45 PM MDT
Civil Twilight 6:06 AM MDT   7:12 PM MDT
Nautical Twilight 5:34 AM MDT   7:44 PM MDT
Astronomical Twilight 5:01 AM MDT   8:17 PM MDT
Altitude -0.8° 49.6° -0.8°
Azimuth 88.6° 180.0° 271.1°
Hour Angle of the Sun 91.5° 91.5° -91.4°
Mean Anomaly of the Sun 257.34° 257.59° 257.84°
Obliquity 23.43° 23.43° 23.43°
Right Ascension of the Sun 178.82° 179.05° 179.28°
Sun Declination 0.51° 0.41° 0.31°
Moon 7:54 AM MDT   7:53 PM MDT
Length of Visible Light 13h 06m
Length of Day
12h 11m
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