Timezones to list on mouseover

I just discovered a cool feature where if you use markdown to enter a date in a format like this

[date=2021-01-07 time=16:00:00 timezone="America/New_York"]

that renders as:

2021-01-07T21:00:00Z

and when you mouse over, it’ll show you a list of converted timezones. That list defaults to New York, Los Angeles, and Paris — handy but not particularly global. What should I add?

It needs to be TZ database names, so we’re constrained by the official list of cities. (Sorry Brno and Boston — it’s Prague and New York for you!)

Oh, I should add: you don’t have to remember the format because there’s a little icon on the editor bar that will construct the right format for you.