Totality swept the Midwest, cloaking Cleveland in darkness for a little under 4 minutes. Experience what those moments were like as temperatures dropped and afternoon turned to night.

People watch as the moon partially covers the sun during a total solar eclipse. 

WASHINGTON — Some of the science lovers in the crowd had either a countdown going on their phone or the peak eclipse time of 3:20 p.m. lodged in their brain ahead of time.

But for most of the Fourth-of-July-fireworks-level crowd here, we knew we reached peak eclipse in D.C. when everyone started spontaneously cheering.

Senate Majority Leader Chuck Schumer, D-N.Y., observed the eclipse from the balcony of his office in the U.S. Capitol, surrounded by staff, talking with them about how part of his state is experiencing totality, while New York City is only experiencing a partial eclipse like the one he was watching.

Watch as NBC News’ Lester Holt and Tom Costello witness the moment the solar eclipse reaches totality in Indianapolis. 

The sun has been blocked — in the sky and on X, apparently.

NASA’s official account for the moon posted a cheeky screenshot “blocking” the sun on the social media platform mid-solar eclipse and touting: "Oops I did it again."

The solar eclipse is more than halfway along its path across the country, with totality wrapping up in Indianapolis.

Next up: totality in Cleveland!

NBC News climate reporter Chase Cain was in Little Rock for its totality, where an ecologist spoke to him about how the animals were reacting to the sudden darkness.

RUSSELLVILLE, Ark. — Marriage is through sickness and in health, through life’s brightest moments and its darkest. But some want to get the darkest out of the way first.

Hundreds of couples from around the country have flocked to a Russellville, Arkansas, soccer field today to tie the knot at the very moment the moon covers the sun. All they needed was a marriage license — and a few minutes on this Monday afternoon — to take part. Call it a total eclipse of the heart.

Russellville is among the top places in the country to watch the solar eclipse: NASA is hosting part of its live broadcast from the city, and hundreds of thousands have traveled into town for the event.

DALLAS — Despite a forecast for cloudy skies, the weather cooperated and an eerie dusk slowly fell as the city entered totality.

For nearly 4 1/2 minutes, it looked like dusk. Eclipse-watchers looked up and clapped and cheered, but the birds were silent. The temperature — which has been in the 80s and a bit humid — also dropped.

Now that the moon is sliding aside, the birds are chirping once again.