For weeks, if not months, those who have seen one repeated to anyone who would listen: There’s nothing like experiencing the totality of a solar eclipse.
For some of them, this was a second time in six and a half years experiencing the eerie calm when the moon passes in front of the sun, at least for a few minutes. And yet, they were just as awestruck.
For others, it was a likely last opportunity to witness such a celestial phenomenon for two decades. It inspired gasps and smiles, solemnity and excitement.
Here is how it looked as the moon’s shadow crossed three countries and 13 U.S. states, with the time of totality in Eastern time.
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Time of totality
2:10 — 2:14 p.m.
El Salto, Mexico
A group of professors and students traveled from the United States to El Salto to conduct the most thorough experiment ever using an eclipse to test Albert Einstein’s theory of relativity. Einstein’s idea held that the massive sun would bend the light of surrounding stars more than previously estimated, proving that matter can pull and warp space and time.
The researchers used five telescopes to measure that effect more closely than ever, measuring stars that appear so close to the sun’s edge they can only be viewed during an eclipse.
After a countdown in Spanish, the sun darkened, and the data collection began. “TOTALITY,” yelled Sam Jeffe, a third-year physics major at Willamette University as it appeared in the telescopes’ lenses. “And it’s clear!”
Researchers will feed the data into the computer program, which will analyze the position of the stars and determine how the sun bent the light around them. But, for now, more than half the battle was done.




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Time of totality
2:27 — 2:31 p.m.
Eagle Pass, Tex.
On U.S. soil, totality first came into view in the border city of Eagle Pass, Tex., where a crowd gathered at a football field erupted into cheers as the skies darkened above them.
A singer crooned, “I’m walking on sunshine!” People put on protective glasses and craned their necks toward the sky. Many began to clap.
Vita Garza Flores, 76, traveled from Northern California to see the eclipse in the city where she was born. She brought her daughter and brother along with her.
She grabbed her eclipse glasses, positioning them across her sunglasses: “Wow!”
Eclipse-watchers in Eagle Pass, Tex., yelled for joy during totality. (Drea Cornejo/The Washington Post)People try to film the fleeting nature of totality. (Drea Cornejo/The Washington Post)Story continues below advertisement
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Time of totality
2:59 — 3:03 p.m.
Carbondale, Ill.
Carbondale, Ill., earned the title of “eclipse crossroads of America,” having fallen in the path of totality for a 2017 solar eclipse as well as the event on Monday. This time, at least, the skies were clear for totality, and a full stadium of eclipse fans burst into collective screams when the moment came.
“This is so much better than 2017,” a one commentator on NASA’s live broadcast noted. “It’s so much darker than 2017.”
Physicist Jessica Dwyer and her family watch the total solar eclipse from Carbondale, Ill. (Jessica Koscielniak/The Washington Post)
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Time of totality
3:11 — 3:15 p.m.
Tiffin, Ohio
When the last pulses of the sun’s rays make their way to Earth before an eclipse enters totality, they appear like a brilliant diamond set on a golden ring. In Tiffin, that meant a chance for some “unforgettable” weddings at an event called “Elope at the Eclipse.”
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Time of totality
3:18 — 3:21 p.m.
Niagara Falls, N.Y.
Crowds flocked to landmarks across the path of totality for a memorable view. At Niagara Falls, despite a thick blanket of clouds, people gathered on the banks of the Niagara River and trained their phone cameras toward the sky. Streetlights turned on, if only briefly, when darkness descended.

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Time of totality
3:32 — 3:35 p.m.
Littleton, Maine
The moon’s shadow reached North America at the beaches of Mazatlan, Mexico, just after 2:07 p.m. Eastern time. Just about 90 minutes later, it crossed the wilderness of northern Maine, on its way toward Canada, and then, the North Atlantic.
A total solar eclipse will next dim communities in the contiguous United States in 2044, but only in parts of Montana and the Dakotas. The country will have to wait one more year for the next coast-to-coast phenomenon, a total eclipse that will stretch from California to Florida on Aug. 12, 2045. It will be a Saturday.
A small group of people watched the April 8 total solar eclipse from a farm in Littleton, Maine. (Whitney Leaming/The Washington Post)People in Littleton, Maine, experienced the total solar eclipse on April 8. (Whitney Leaming/The Washington Post)Story continues below advertisement
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About this story
Design and development by Stephanie Hays. Photo editing by Olivier Laurent. Design editing by Chloe Meister and Matt Callahan. Text editing by Katie Zezima. Graphics by Emily Eng. Video editing by John Farrell and Josh Carroll. Text by Scott Dance, Kasha Patel, Arelis R. Hernández and Joel Achenbach.
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