Stop the clock!

iPhone users are reeling after a viral post on X (formerly Twitter) revealed a surprising design quirk in the Clock app — one that’s been hiding in plain sight for years.

For anyone who’s ever set an alarm on an iPhone, the process seems straightforward. The time picker — the rotating wheel of numbers — gives the impression of an endless loop of hours that users can scroll.

However, a user on X shattered this long-held assumption by revealing that the alarm time picker isn’t truly circular at all. Instead, it’s an extremely long, linear list of times.

“The time picker on iPhone’s alarm app isn’t actually circular — it’s just a really long list,” the user posted on X, along with a video to prove it.

In the video, the time picker scrolls until the end of the list is hit — landing at 4:39.

Curious users tested it out for themselves — and to their amazement, it did end.

The “random time” cutoff has left many baffled.

“Why is this such a disturbing discovery?” someone asked. Another added, “I feel so betrayed.”

Many were equally surprised by the design, noting that they’d used the alarm function for years without ever realizing it wasn’t an infinite scroll.

However, others defended the interface, pointing out that no one really needs to scroll endlessly — it’s designed to make time selection quick and seamless.

“The important question here is, what were you trying to do?” a person replied to the original tweet.

“How do you even figure these things out lol,” another asked.

Still, the fact that the illusion fooled even the most seasoned iPhone users has raised eyebrows.

Apple has not commented on the revelation, but this isn’t the first time the tech giant has been called out for hidden features or unexpected design quirks.

Another X user revealed that Apple’s Calendar app also uses a long list that ends. The last date iPhone users can currently set a calendar reminder for is April 18 in the year 10000.

And in June, Apple fans were surprisingly polarized by a change introduced in the forthcoming iOS 26, which includes a redesign of the Clock app icon.

These inconsequential but shocking discoveries have struck a chord with users, who are both amused and annoyed that such a basic function harbored such a secret.