GMT Delta Confusion

Markus Kuhn Markus.Kuhn at
Wed Jun 9 18:45:06 UTC 1999

"Richard L. Shockney" wrote on 1999-06-09 17:42 UTC:
> I recently designed a time zone converter and reference site using the
> excellent database that is maintained at this site. Conversions between time
> zones appear as expected except when the time zone involves one of the
> Etc/GMT+ or Etc/GMT- designations.

The sign of the Etc/GMT+-... files is as defined in POSIX.1

for the TZ environment variable, which many people consider to be
counterintuitive and also incompatible to the ISO 8601 notation

Hope this helped


Markus G. Kuhn, Computer Laboratory, University of Cambridge, UK
Email: mkuhn at,  WWW: <>

More information about the tz mailing list