So Earth had been slowing down until 2016. There have been no leap seconds added since then. Due to the ice melting at the polar caps the weight is off at top and bottom and that land has been rising, making Earth more spherical. This has led to the Earths speeding up in its rotation. They’re saying we might have to add an inverse leap second, or rather just subtract one.
I’d read a few years ago, there’s a particular industry that has become very dependent upon the atomic clocks that are attached to the GPS system. That industry is finance. Now, we’re not talking about your check clearing for your car payment, but rather immense transfers of money. The article discussed how one or two seconds of interest on your mortgage payment is nothing, but once you start getting into corporate buyout amounts, you’re talking about real money. I’m sure the money people will find a way around this issue and account for any differences in calculations. What are you going to do if one country decides, out of whatever kind of stupidity, to not add a leap second or remove one?