Why Leap Seconds Confuse Computers
Source: gizmodo.com

Last night, time on Earth had a leap second. The planet’s computer systems survived unscathed, thanks to months of careful preparation by engineers. But here’s a concise explanation of why, left to their own devices, a bunch of very expensive computers could’ve thrown a hissy fit.
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MATsolutions' insight:

You may not have heard, but June 30th, 2015 brought with it a "leap second" to make up for the fact that Earth's rotation is slowing down. Though not a significant change to humans, leap seconds can cause confusion for computers as they count a number twice while processing. Luckily for us, no great impacts were felt as a result of the small change in time and computing carried on successfully. For more, visit Gizmodo to read the article in its entirety.