Today, 30 June 2015, has one more second in it than normal. It’s an extra second added to the world’s clocks to cancel out the slowing of the Earth’s rotation.
While it might seem like a small thing, a leap second gives you more time to do something crazy and can cause big problems for technology.
The good news
The great thing about having a leap second is that we get more time, seemingly plucked from nowhere like we’re Timelords. It might only be a second, but that’s long enough to create a memory.
Just take a look at the 1 Second Everyday app for Android and iOS. It lets you record one-second videos every day of your life so you can create an epic montage of memories. Just take a look at the video from the app’s founder below.
So what are you going to do with your leap second? Let us know in the comments at the end of the article.
The bad news
While a leap second gives you more time for fun things, it can cause big problems for the technology we use every day. That’s because computers just can’t comprehend an extra second in a day – a day has an unchangeable definition to a computer.
We last had a leap second in 2012, and it brought down Reddit, LinkedIn, FourSquare, Mozilla and a lot of other sites and apps. Qantas' entire computer system went down for hours, forcing employees to check in passengers by hand.
So if you’re an app-holic, you might not be able to use your leap second to its full potential as the likes of Snapchat, Instagram and even Facebook could go down.
When is the leap second added?
This year’s leap second will be added to the last minute of the day in Greenwich Mean Time. If you’re reading this in the UK, that means clocks will show 00:59.60 tomorrow morning (as British Summer Time is one hour ahead of GM).