So that's everyone in the world except......Iceland. I quite literally live a 30 minute drive from Greenwich but for half the year I'm not in it's timezone.

The astrophysicists need to be able to reliably predict when leap seconds will be needed and then the world switch to a UTC which is on a four week cycle with no leap year bullcrap.

Edit in fact I'd ditch the whole hour minute thing altogether and mark each day as a percantage. That would negate the UTC weirdness and instead of going to work 9-5 you'd go 37.5 - 70.8 or in utc for new york (gmt-4 currently) 20.8 - 54.1