Google and lots of other firms use a "leap smear" to hide the leap second from end users, essentially "smearing" the second across the hours before and after ea

Google and lots of other firms use a "leap smear" to hide the leap second from end users, essentially "smearing" the second across the hours before and after each leap. https://developers.google.com/time/smear https://developers.google.com/time/smear