Solar Eclipse Computer

U.S. Naval Observatory
Astronomical Applications Department

Solar Eclipse of 2017 Aug. 21

Sun in Partial Eclipse at this Location

Alexandria, Virginia (Longitude W 77° 4' 48.0", Latitude N 38° 49' 12.0", Height 0m)

August 21, 2017   Universal Time (UT1)Delta T: 69.4s
PhenomenonDayTime (UT1)Sun's Altitude (°)Sun's Azimuth (°)Position Angle (°)Vertex Angle (°)
Eclipse Begins2117:17:49.563.0183.5284.3281.6
Maximum Eclipse2118:42:50.156.2223.2
Eclipse Ends2120:01:44.443.6246.2123.576.8


Duration2h 43m 54.9s
Magnitude0.847
Obscuration81.4%

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