On Fri, Jun 3, 2016, at 01:34, Matt Johnson (PNP) via tz wrote: > If they were, more than one IANA zone might be sharing the same RTZ > number ...*that's the point*. Time zone abbreviations aren't supposed to identify IANA zones, they're supposed to identify real present-day timezones. Just like more than one IANA zone shares EST. This is a feature, not a bug.