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Astronomy

Sep. 21, 2017 Rise Solar Noon Set
Actual Time 7:13 AM MDT 1:20 PM MDT 7:25 PM MDT
Civil Twilight 6:43 AM MDT   7:55 PM MDT
Nautical Twilight 6:09 AM MDT   8:30 PM MDT
Astronomical Twilight 5:33 AM MDT   9:05 PM MDT
Altitude -0.8° 45.0° -0.8°
Azimuth 88.4° 180.0° 271.3°
Hour Angle of the Sun 91.7° 91.6° -91.5°
Mean Anomaly of the Sun 257.37° 257.62° 257.87°
Obliquity 23.43° 23.43° 23.43°
Right Ascension of the Sun 178.85° 179.08° 179.30°
Sun Declination 0.50° 0.40° 0.30°
Moon 8:38 AM MDT   8:31 PM MDT
Length of Visible Light 13h 11m
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