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Astronomy

Sep. 21, 2017 Rise Solar Noon Set
Actual Time 7:16 AM MDT 1:22 PM MDT 7:27 PM MDT
Civil Twilight 6:48 AM MDT   7:54 PM MDT
Nautical Twilight 6:16 AM MDT   8:26 PM MDT
Astronomical Twilight 5:44 AM MDT   8:58 PM MDT
Altitude -0.8° 49.9° -0.8°
Azimuth 88.6° 180.0° 271.1°
Hour Angle of the Sun 91.5° 91.4° -91.4°
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° 179.31°
Sun Declination 0.50° 0.40° 0.30°
Moon 8:38 AM MDT   8:36 PM MDT
Length of Visible Light 13h 05m
Length of Day
12h 11m
New Moon, 2% of the Moon is Illuminated
Sep 21
New Moon
Sep 27
First Quarter
Oct 5
Full
Oct 12
Last Quarter
Oct 19
New