Ævar Arnfjörð Bjarmason [off-list ref] writes:
quoted
Here are some links to past explorations:
http://public-inbox.org/git/20160208152858.GA17226@sigill.intra.peff.net/
http://public-inbox.org/git/87vb2d37ea.fsf@web.de/
There's a third and possibly least shitty option that isn't covered in
those threads; We could just make a pass over the strftime format
ourselves and replace %z and %Z with the timezone (as done for
DATE_ISO8601_STRICT in date.c), then hand the rest off to strftime().
I do not know about %Z but certainly for %z that sounds the least
bad.
In a nearby message René seems to have come up with the same idea,
too ;-)