BUT, I need to know if TODAY() is equal to the holiday date for different timezones. If I perform a DATETIME_FORMAT with SET_TIMEZONE, then it sets the date to yesterday. And if I use NOW() as the basis for the comparison, it won’t just check against the date, it seems to also want the time.
So, question is two-fold: 1) How can I compare today’s date with a specific date in different timezones in order to determine if today is a holiday in that timezone? 2) How can I compare today’s date to a list of dates?
Unfortunately this can't be done with Airtable's available formula functions. There aren't currently any functions that allow for the same operation to be run on a collection of items (dates, strings, etc.). This could be done using a script, but that would be a bit more involved (writing the script, choosing how that script would be triggered, etc.)