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Astronomy

Sep. 20, 2017 Rise Solar Noon Set
Actual Time 6:58 AM MDT 1:04 PM MDT 7:10 PM MDT
Civil Twilight 6:32 AM MDT   7:35 PM MDT
Nautical Twilight 6:02 AM MDT   8:05 PM MDT
Astronomical Twilight 5:32 AM MDT   8:35 PM MDT
Altitude -0.8° 55.4° -0.8°
Azimuth 88.3° 180.0° 271.4°
Hour Angle of the Sun 91.7° 91.6° -91.5°
Mean Anomaly of the Sun 256.37° 256.62° 256.88°
Obliquity 23.43° 23.43° 23.43°
Right Ascension of the Sun 177.94° 178.17° 178.40°
Sun Declination 0.89° 0.79° 0.69°
Moon 7:18 AM MDT   7:47 PM MDT
Length of Visible Light 13h 03m
Length of Day
12h 12m
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