timeZonesForCountry function Time zone lookups
Provides a list of time zones relevant to a specific country.
The country arg is an ISO 3166 2-letter
code.
For example, US = United States, CA = Canada, EE = Estonia, etc.
Implementation
List<ZoneDescription> timeZonesForCountry(String country) =>
TimeZoneDatabase().descriptionsByCountry[country.toUpperCase()].toList();