Aren't Org mode dates ISO 8601? ISO 8601 has an optional timezone, is that not supported in Org mode? You could then use format-time-string to configure how it

Aren't Org mode dates ISO 8601? ISO 8601 has an optional timezone, is that not supported in Org mode? You could then use format-time-string to configure how it is displayed. Another possible solution. Often - but not always - a datetime and timezone pair can alternatively be represented as a UNIX timestamp. Depending on the use case there are tons of ways to manipulate UNIX timestamps, and Org mode might support that naively (I'm not sure, try it).