Given the trend of leap seconds, I don't think it will happen (unless we do really stupid things to the earth). See https://what-if.xkcd.com/26/ https://what-if

Given the trend of leap seconds, I don't think it will happen (unless we do really stupid things to the earth). See https://what-if.xkcd.com/26/ https://what-if.xkcd.com/26/