To give you an idea how to build your local TZ value, a few more examples provided by Erik Anderson:

MDT6

This means that MDT (Mountain Daylight Time) is 6 hours earlier than Coordinated Universal Time (UTC) and does not have daylight saving time.

JST-9

This means that Japanese Standard Time (JST) is 9 hours earlier than Coordinated Universal Time (UTC) and does not have daylight saving time.

MST7MDT

This means that Mountain Standard Time (MST) is 7 hours earlier than Coordinated Universal Time (UTC). Both standard time and daylight saving time apply to this locale. By default Mountain Daylight Time (MDT) is one hour ahead of MST. Since it isn't otherwise specified, daylight saving time starts on the first Sunday of April at 2:00 A.M. and ends on the last Sunday of October at 2:00 A.M.

NST3:30NDT1:30

This means that Newfoundland Standard Time (NST) is 3.5 hours earlier than Coordinated Universal Time (UTC). Both standard time and daylight saving time apply to this locale. Newfoundland Daylight Time is 1.5 hours earlier than Coordinated Universal Time (UTC).

MET-1METDST-2,M3.5.0/02:00:00,M10.5.0/03:00:00

This example has been sent by Jacques Nilo and provides a complete expample for MET, METDST (summer time) and the date and daytime it will be changed.