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Astronomy

Sep. 20, 2017 Rise Solar Noon Set
Actual Time 7:04 AM MDT 1:14 PM MDT 7:23 PM MDT
Civil Twilight 6:31 AM MDT   7:56 PM MDT
Nautical Twilight 5:52 AM MDT   8:35 PM MDT
Astronomical Twilight 5:11 AM MDT   9:15 PM MDT
Altitude -0.8° 39.7° -0.8°
Azimuth 87.6° 180.0° 272.1°
Hour Angle of the Sun 92.4° 92.3° -92.2°
Mean Anomaly of the Sun 256.38° 256.63° 256.88°
Obliquity 23.43° 23.43° 23.43°
Right Ascension of the Sun 177.95° 178.18° 178.41°
Sun Declination 0.89° 0.79° 0.69°
Moon 7:23 AM MDT   7:57 PM MDT
Length of Visible Light 13h 24m
Length of Day
12h 18m
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