Solar Eclipse Computer

U.S. Naval Observatory
Astronomical Applications Department

Solar Eclipse of 2017 Aug. 21

Sun in Total Eclipse at this Location

Stanley, Idaho (Longitude W 114° 56' 24.0", Latitude N 44° 13' 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 Begins2116:12:22.834.7108.9285.9329.7
Totality Begins2117:28:17.246.7127.8101.3136.7
Maximum Eclipse2117:29:23.346.8128.2
Totality Ends2117:30:31.747.0128.5293.5328.5
Eclipse Ends2118:52:16.355.9157.6109.1125.4


Duration2h 39m 53.5s
Duration of Totality2m 14.6s
Magnitude1.013
Obscuration100.0%

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