No two locations will see exactly the same solar eclipse on August 21st. But you can use this handy Eclipse Widget to find out exactly what you'll see and when.

On August 21, 2017, the Moon's shadow will pass across the continental U.S. for the first time in 99 years. Every state in the lower 48 will see a partial eclipse, and the narrow, 70-mile-wide path of totality will pass from Oregon through to South Carolina. In that strip, viewers will experience the Moon's deepest shadow, as our nearest celestial neighbor briefly covers the face of the Sun.

Find out what kind of eclipse you'll see at your chosen location — and find the spot of totality nearest you — with this eclipse widget, courtesy of the makers of SkySafari. You can also download the eclipse widget for iOS and Android from

Eclipse Widget Features:

Countdown Timer: Count down to when the Moon’s shadow makes landfall on the West coast of the United States — down to the second. During the eclipse, the countdown clock will update to reveal which state the shadow is in and how long it will take to reach your location.

Interactive Eclipse Map: Select any location on the map to retrieve accurate eclipse event times. Uses the impressive interactive eclipse map developed by Xavier Jubier and works for any location on Earth.

Eclipse Simulator: Simulate the eclipse from your location or any location on Earth. A time slider lets you manipulate time and simulate the eclipse from start to end.

Shadow Tracker: Enter "Space View" and watch the Moon’s shadow travel across the face of Earth.

Learn more about the 2017 total solar eclipse!
Sky & Telescope's Eclipse Portal contains instructions on viewing the eclipse and building eclipse viewers, weather forecasts for your location, and more.


Image of Joe Stieber

Joe Stieber

July 28, 2017 at 4:55 pm

I think the countdown clock's description as being "Until First Contact in Oregon" might be misleading. Adding the current time from the NIST's web clock to this countdown clock yields an event time of August 21 at 17:15:58 UT. That would actually be the beginning of totality near Lincoln Beach, OR (where the U.S. Naval Observatory's eclipse calculator yields a 17:16:02 UT start of totality). This location is essentially the first landfall of the eclipse, where the first contact of the lunar limb on the solar disc will be visible for the first time from the continental USA. That occurs at 16:04:35 UT per the USNO.

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