Subject: bug#9614: date ignoring wrong TZ values

From: Paul Eggert <[email-masked]>
Date: Tue, 27 Sep 2011 22:48:35 -0700

On 09/27/11 22:44, Sandro Santilli wrote:
> A warning/error message with hint on how to correctly form
> the string would be very friendly for users

Unfortunately, there's no portable way to determine
which TZ values are supported on the current platform.
One cannot even reliably determine whether the current TZ
value is supported.  So it's not clear how that warning
would be generated.

Also, lots of programs use TZ; it's not just "date".