The next great solar eclipse – the last total solar eclipse visible from the contiguous U.S. until 2044 – will take place April 8.

And while almost all in the U.S. will experience some of the eclipse, residents in 15 states along the path of totality will see the moon’s shadow completely covering the sun.

According to NASA, a total solar eclipse happens when the moon passes between the sun and Earth, blocking the face of the sun. People along the path of totality will experience the total solar eclipse, meaning the sky will become dark as if it were dawn or dusk. Weather permitting, people along the path of totality will see the sun’s corona, our outer atmosphere, which is usually obscured by the bright face of the sun.

The path of totality will start in Mexico and move across Texas, Oklahoma, Arkansas, Missouri, Illinois, Indiana, Ohio, New York, Pennsylvania, Vermont, New Hampshire and Maine before heading out over the North Atlantic. Small portions of Kentucky, Michigan and Tennessee will also experience almost the entirety of the eclipse.

The eclipse will enter Canada in Southern Ontario, and continue through Quebec, New Brunswick, Prince Edward Island, and Nova Scotia. The eclipse will exit continental North America on the Atlantic coast of Newfoundland, Canada, at 5:16 p.m. NDT.

You can go here to see a timeline of when the eclipse will reach totality across the U.S.

Depending on how close you are to the path of totality will determine what you will see and how long it will last. The longest duration of totality is 4 minutes, 28 seconds, near Torreón, Mexico. Most places along the path of totality will see the sun blocked out for between 3.5 and 4 minutes.

No matter how much of the eclipse you will see, you will need safety glasses. You can go here to see more safety tips for eclipse watching.

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