There's an emerging timezone that suddenly seems less weird, even though it is truly the weirdest of them all, yet is geographically and culturally accepted everywhere. It has an abbreviation of BTC, which means Coordinated Bitcoin Time (which I suppose is the first universal timezone to actually be coordinated and not dictated).

I spend a lot of time thinking about leap seconds

Times zones are fiat and should be eliminated. The world should run on GMT (Zulu) as the aviation world already does.