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Astronomy

May. 21, 2018 Rise Solar Noon Set
Actual Time 5:19 AM MDT 12:50 PM MDT 8:21 PM MDT
Civil Twilight 4:44 AM MDT   8:56 PM MDT
Nautical Twilight 4:00 AM MDT   9:40 PM MDT
Astronomical Twilight 3:07 AM MDT   10:34 PM MDT
Altitude -0.8° 65.7° -0.8°
Azimuth 60.0° 180.0° 300.2°
Hour Angle of the Sun 112.7° 112.7° -112.8°
Mean Anomaly of the Sun 135.81° 136.12° 136.42°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun 58.20° 58.51° 58.83°
Sun Declination 20.22° 20.29° 20.35°
Moon 11:49 AM MDT (5/21)   1:29 AM MDT (5/21)
Length of Visible Light 16h 11m
Length of Day
15h 02m
Waxing Crescent, 50% of the Moon is Illuminated
May 22
Waxing Crescent
May 29
Full
Jun 6
Last Quarter
Jun 13
New
Jun 20
First Quarter