[tz] Glibc 2.19 adds support for version 3 tz format
eggert at cs.ucla.edu
Wed Feb 12 03:13:02 UTC 2014
The GNU C Library version 2.19, released February 8, adds support for
version-3 format tz binary files. I thought I'd give this list a
heads-up, in case other C-library maintainers are lurking and want to
keep up with the Joneses.
As you may recall, version 3 is a minor extension to the binary format,
which adds support for some less-common timekeeping practices. So far,
the only tz-database timestamps affected by this change are time stamps
after the year 2037 in America/Godthab with tz data 2013e or later.
These time stamps cannot be described by a POSIX TZ string, so version 3
uses the quasi-POSIX string 'WGT3WGST,M3.5.0/-2,M10.5.0/-1'.
The glibc 2.19 announcement is at
details about this change can be found at
More information about the tz