International Caps Lock Day

The premise is simple: for one day, abandon lowercase entirely. Hit the Caps Lock key and leave it on while you text, email, post, and comment. It is a parody holiday with a point, poking fun at the people who type in all caps all year long while giving the rest of us a sanctioned excuse to join them. Just remember to switch it off tomorrow, or your Monday morning emails will sound furious.

The day was created in 2000 by Derek Arnold, a software developer from Iowa who had simply seen too many all-caps messages online. He proposed the holiday on the community blog MetaFilter as a satirical tribute to the key itself, choosing October 22 as the original date. Arnold later joked that he started it partly out of concern that a generation might grow up not even knowing they could type in capital letters without holding down the Shift key, calling the whole thing a matter of real engineering importance with his tongue firmly in his cheek.

The second date, June 28, was added in 2009 to honor TV pitchman Billy Mays, who died on June 28, 2009. Mays built a legendary career on enthusiastic, full-volume delivery, with “BUT WAIT, THERE’S MORE!” as his signature battle cry. His booming infomercial style was essentially verbal Caps Lock, and in some corners of the internet the key itself earned the nickname the Billy Mays Button.

The key has a longer history than the holiday. Caps Lock evolved from the Shift Lock found on mechanical typewriters. Early typewriters could only produce capital letters until Remington introduced the Shift key in 1878, giving typists access to lowercase. When keyboards became standard computer equipment in the late 1970s, the Caps Lock key came along for the ride, and it has been locking unsuspecting typists into shout mode ever since.

And why does typing in all caps read as shouting? Nobody voted on it and no committee decreed it; the internet simply looked at giant capital letters and collectively decided, yep, that is yelling. That unspoken agreement is the entire engine of the holiday. In 2027, celebrants get two chances to make some noise: Monday, June 28 and Friday, October 22. Use them wisely, or at least loudly.

THE STORY BEHIND INTERNATIONAL CAPS LOCK DAY

💻 A MetaFilter Joke From 2000
In 2000, Iowa software developer Derek Arnold was fed up with messages typed entirely in capital letters, so he proposed International Caps Lock Day on the community blog MetaFilter as a satirical tribute to the key. The joke caught on across early internet forums and never really left.

📺 The Billy Mays Connection
The June 28 date was added in 2009 to honor TV pitchman Billy Mays, who died on June 28, 2009. Mays built a career on enthusiastic, full-volume delivery, with “BUT WAIT, THERE’S MORE!” as his signature, making him the patron saint of typing in all caps.

⌨️ From Shift Lock to Caps Lock
The key descends from the Shift Lock on mechanical typewriters. Early typewriters could only produce capital letters until Remington introduced the Shift key in 1878. When keyboards became standard computer equipment in the late 1970s, the Caps Lock key came along for the ride.

🔊 Why All Caps Means Shouting
No committee ever voted on it, but the internet collectively decided that typing in all caps reads as yelling. Arnold’s holiday pokes fun at exactly that: the megaphone effect of a single key, and the people who lean on it a little too hard.

📅 Twice the Shouting Every Year
October 22 was the original date, and June 28 joined later. In 2027, that means two chances to celebrate: Monday, June 28 and Friday, October 22. Mark both, or your keyboard might feel neglected.

The key earned its terrible reputation honestly. Everyone has sent the accidental all-caps email, the one that makes a routine status update read like a declaration of war. Caps Lock sits right where a pinky can catch it mid-sentence, and entire office threads have derailed because someone did not notice the little light was on. The holiday takes that universal frustration and flips it: if the key is going to hijack your tone anyway, you might as well hijack it back, on purpose, for exactly one day.

It helps that the joke has had a quarter century to marinate. What started as a MetaFilter gag spread through early internet forums, blogs, and chat rooms, outliving plenty of the websites that hosted it. The holiday survived the migration from message boards to social media without missing a beat, because every new platform rediscovers the same truth within about a week: somebody, somewhere, is typing in all caps, and everybody else can hear it.

📁 The Day Before the Shouting
The October 22 observance has a perfectly nerdy neighbor: October 21 is Clean Out Your Virtual Desktop Day, created by the Personal Computer Museum in Ontario, which asks everyone to organize the files on their computer. Tidy your desktop on the 21st, then shout about it on the 22nd. The calendar has a sense of humor.

🌐 A Joke That Outlived Its Era
Few internet gags from the year 2000 are still standing, but Caps Lock Day survived the death of dial-up, the rise of social media, and the invention of the smartphone keyboard. Every new generation of typists rediscovers the key, abuses it exactly once by accident, and then celebrates it on purpose twice a year.

The October date comes with crowded company, which only adds to the fun. October 22 is also observed as National Nut Day in the UK, World Stuttering Awareness Day, and National Color Day in the US, among others. Caps Lock Day holds its own in that lineup by being the loudest, which, given the competition includes a day for shouting awareness of nothing in particular, feels exactly right.

🍇 Sharing the Calendar
October 22 is a busy day: the UK marks National Nut Day, the world marks World Stuttering Awareness Day, and the US marks National Color Day. International Caps Lock Day elbows its way into that lineup as the only one you can celebrate without leaving your keyboard.

📱 The Shouting Never Stops
Ask around and you will find Caps Lock Day alive on every corner of the internet: all-caps tweets, shouty forum posts, and group chats that briefly become unreadable. The holiday’s real headquarters is wherever people are typing, which is to say, everywhere.

WAYS TO CELEBRATE

💬 Type Everything in All Caps
Hit that Caps Lock key and leave it on. Send texts, emails, and social posts in full shout mode all day on June 28. Apologize to no one; it is literally the assignment.

👏 Shout Out Your Favorites
Use your loudest typography for good: post all-caps tributes to friends, coworkers, and local heroes. A compliment hits different when it looks like it is being announced from a rooftop.

🎤 Channel Your Inner Pitchman
Honor Billy Mays by delivering your best over-the-top product pitch, out loud, to anyone who will listen. Bonus points for starting a sentence with “BUT WAIT, THERE’S MORE!”

Celebrate International Caps Lock Day

On June 28, 2027, engage the Caps Lock key and let your fingers do the shouting. Type it loud, type it proud, and remember to switch it off tomorrow before your inbox stages an intervention. Your keyboard, your rules: all caps, all day, and then back to your regularly scheduled lowercase.