Jaybird 4 will add support for Firebird 4 WITH TIME ZONE types. The
proposal for the feature and scope of support is specified in the
(draft) jdp-2019-03.

See
https://github.com/FirebirdSQL/jaybird/blob/master/devdoc/jdp/jdp-2019-03-time-zone-support.md

I'd really appreciate any feedback (even if it is just assent).

Mark
--
Mark Rotteveel