Returns the time zone identified by the provided zoneId.
The supported variants of time zone identifiers:
Z, 'UTC', 'UT' or 'GMT' — identifies the fixed-offset time zone TimeZone.UTC,
a string starting with '+', '-',
GMT-— identifiers the time zone with the fixed offset specified after
all other strings are treated as region-based zone identifiers. In the IANA Time Zone Database (TZDB) which is used as the default source of time zones, these ids are usually in the form
area/city, for example,