note: some time zones may be defunct
note: usually there is at least one time zone per country/dependency, but sometimes the official time zone is that of another country/dependency
note: G-20 (19 countries, minus EU/AU) west to east, other UN members (by 2-letter ISO code), other countries/dependencies/areas of special sovereignty
note: sources: countrycode.csv, List of tz database time zones - Wikipedia, retrieved 2025-07-14