EU and US: They have both been talking about it in spurts, and they do wake up every ~6 months when the time changes, but no serious action anywhere.
It's easier to adjust local schedule than to switch the clock back and forth.
For the unlucky rest of the world it also means that things like public holidays and suchlike either weirdly start and end in the middle of the (solar) day, or alternatively you'd have to specify that all holidays etc. actually start and end not at midnight (UTC), but whatever time actually corresponds to some time in the middle of night, which basically means reintroducing time zones through the back door.
Also the link K2L8M11N2 posted.