Distribution/Version: debian sarge and gentoo

All dates in the calendar are in the US MM/DD/YYYY format, despite have my
locale correctly generated and set to en_NZ.UTF-8 which should use DD/MM/YYYY,
as `date +%c` and other localised applications get right.

There is no file /usr/share/locale/en_NZ/LC_MESSAGES/evolution-2.0.mo. If I
create this directory and copy the .mo file from en_AU or en_GB, then evolution
will set the locale correctly and show my dates in the expected format. I don't
see why the gettext file should have to be present for evolution to set the
LC_TIME stuff. Is evolution not doing setlocale() correctly, perhaps?

This is a really annoying bug. For years I have put up with the wrong date
formats, and stupidly assumed that evolution was hard-coded to use MM/DD/YYYY
everywhere.

Bugs 2051376 and 270607 may be related to this.