> If you want *permanent standard time* for the UTC-5:00 time zone, that'd be "EST5", > which does *not* correspond to a tzdb file; it works as a TZ setting because the tz code > parses TZ POSIX/SV-style if it doesn't correspond to a file.
Agree. For this case, Etc/GMT+5 seems like the right zone to use. We don't need to bring in obsolete SystemV zones for this case.