Welcome to the very first entry in our new Trivia & Curiosities corner — the spot for the delightful, surprising, “well, I never knew that” facts that make good conversation and keep the mind spry.

And what better place to begin than the Fourth of July? You’ve celebrated it your whole life — the fireworks, the flags, the hot dogs sizzling on the grill. But I’d wager a slice of apple pie that some of what follows will surprise you. A few of these are perfect for sharing with the grandkids at the cookout, right after someone asks why we do all this in the first place.

Let’s light the fuse.

Surprise number one: we’re celebrating on the “wrong” day

Here’s the fact that stops people mid-bite. The Continental Congress actually voted for independence on July 2, 1776 — two days before the date we celebrate. What happened on July 4 was that Congress approved the final wording of the Declaration of Independence, and since that’s the date printed on the document, that’s the day that stuck.

One Founding Father was so sure of the second that he never quite got over it. John Adams wrote to his wife Abigail on July 3, 1776, that “the Second Day of July” would be “the most memorable Epocha in the History of America,” celebrated “with Pomp and Parade… Games, Sports, Guns, Bells, Bonfires and Illuminations from one End of this Continent to the other.” He’d predicted the fireworks exactly — just the wrong date. As the story goes, Adams was so miffed by the switch to the 4th that he’d refuse invitations to Fourth of July celebrations out of principle.

Surprise number two: it wasn’t signed that day either

We picture all the Founders gathered around a table on July 4th, quill in hand. It didn’t happen that way. Most of the delegates didn’t actually sign the Declaration until August 2, 1776 — nearly a month later. On July 4 itself, essentially only two men signed: John Hancock, as President of the Congress, and Charles Thomson, its Secretary. In all, 56 delegates would eventually put their names to it.

And speaking of Hancock — ever wonder why we say “put your John Hancock right here” when we mean sign? It’s because he signed first, in large, bold, unmissable letters right in the middle of the page. Legend has it he wrote it big so the King of England could read it without reaching for his spectacles. (Historians can’t confirm that charming detail, but it’s too good not to mention.)

A few things about that famous document

• Thomas Jefferson wrote the first draft in about 17 days — roughly June 11 to 28, 1776 — and then had to watch his colleagues make some 86 changes to it before approval. Any writer who’s been through a tough round of edits can sympathize.
• It was written on a “laptop” — sort of. Jefferson drafted it on a portable writing desk that rested across his lap, a device actually called a “lap desk” in his day.
• The first copies went out that night. A Philadelphia printer named John Dunlap ran off about 200 copies — the “Dunlap Broadsides” — dated July 4, to be carried across the thirteen colonies.
• The first public reading was July 8, 1776, at the Pennsylvania State House, the building we now call Independence Hall.
• That famous painting isn’t the signing. The John Trumbull scene you may know from the back of the $2 bill actually shows the drafting committee presenting their work — a moment from late June, not the July signing everyone imagines.

The eeriest coincidence in American history

This one gives me chills every time. Two of the men most responsible for the Declaration — John Adams and Thomas Jefferson — had been friends, then bitter rivals, then friends again in old age. Both died on the very same day: July 4, 1826 — the fiftieth anniversary, to the day, of the document they’d brought into the world.

They were hundreds of miles apart, Jefferson in Virginia and Adams in Massachusetts. Jefferson died a few hours earlier in the afternoon. Adams, not knowing this, reportedly spoke among his last words: “Thomas Jefferson survives.” He was wrong by mere hours — but there’s a kind of poetry in it that no storyteller could have invented.

And it doesn’t stop there. A third president, James Monroe, also died on July 4 — in 1831. And in a happier twist, Calvin Coolidge remains the only U.S. president born on Independence Day, on July 4, 1872.

How we came to celebrate the way we do

Those fireworks lighting up your sky? We have John Adams’s “illuminations” to thank — the tradition traces right back to his vision. Philadelphia held the first annual celebration on July 4, 1777, complete with fireworks and bonfires, even while the Revolutionary War still raged. The next year, George Washington marked the day by giving his soldiers a double ration of rum.

It took a good while to become official, though. The Fourth of July didn’t become a federal holiday until 1870, and it wasn’t a paid holiday for federal workers until 1938 — long after most of the Founders were gone. And if you want the oldest continuous celebration in the country, it’s in Bristol, Rhode Island, going strong every year since 1785.

Fun facts for the cookout

Save these for when the burgers are on and the conversation needs a spark:

• Americans eat about 150 million hot dogs on the Fourth — enough, by one estimate, to stretch from Washington, D.C. to Los Angeles more than five times.
• The competitive-eating crowd has its own tradition: Nathan’s Hot Dog Eating Contest has been held at Coney Island every July 4th for decades.
• We spend more than a billion dollars on fireworks each year — and about 99% of them are imported from China.
• The biggest fireworks show in the country is Macy’s, over New York City.
• The Liberty Bell doesn’t ring on the Fourth — it’s too fragile, cracked long ago. Instead it’s gently tapped 13 times, once for each original colony. Its inscription, fittingly, comes from the Bible — Leviticus 25:10: “Proclaim liberty throughout all the land.”
• One World Trade Center stands exactly 1,776 feet tall — a quiet nod to the year of independence.
• Our current 50-star flag was designed by a teenager as a high-school project in the late 1950s. His teacher gave him a B-minus. When his design was actually chosen as the national flag, the grade was changed to an A.
• It’s one of the biggest days of the year for backyard barbecues and beer — so you’re in very good, very American company.
• A matter of scale: in 1776, there were only about 2.5 million people in the brand-new United States. Today there are more than 340 million of us celebrating.

One last thought

There’s something lovely about a holiday built on a document — on words, carefully argued and boldly signed by people who knew they were risking everything. However you mark the day, whether it’s a big parade or just a quiet grill in the backyard, I hope it’s a warm one, surrounded by people you love.

And now you’ve got a pocketful of facts to share between the potato salad and the fireworks. Happy Fourth.

What’s your favorite Fourth of July tradition — or a fact I missed? I’d love to hear it; tell me through the contact page.