Hi Andi,

I've reported the exact same issue a few weeks ago. The maintainers are 
already working on it and a patch has been posted to the mailing list. A 
few changes have been requested and it still needs testing.

I'll attach the patch and previous discussion.


Greetings
jdoubleu

On 3/15/2022 3:23 PM, Andreas Merkle wrote:
> Posix timezone strings are in the format ABRVnn[ABRV[nn]][,...], e.g. 
> GMT0BST,... is London TZ descriptor with two abbreviations GMT and BST.
> ABRV means abbreviation. Such abbreviations are not defined for every 
> timezone around the world.
> According to https://data.iana.org/time-zones/theory.html if there is no 
> common English abbreviations, use offsets like -05 and +0530 that are 
> generated by zic's %z notation.
> These numeric offsets are enclosed between <...>. For example, 
> abbreviation for Sao Paulo TZ is <-03>3 (instead of e.g. valid SAOPAUL03).
> 
> A pull request for the newlib-xtensa version by earlephilhower fixes 
> this: https://github.com/earlephilhower/newlib-xtensa/pull/14
> I would like to provide the corresponding patch here if its ok?
> 
> Andi
>