Hey Wilfred!

 WvV> But that's not the TZUTC flag.

It is still in there although it would be easier to do something like this to
generate a proper one rather than extract it from RFC-3339;

  printf "\1TZUTC: %s\r" "$(date +%z | tr -d +)"

It even has the proper C0 control codes in it as per specs.

Life is good,
Maurice

... Man byþ on myrgþe his magan leof; sceal þeah anra gehwylc oðrum swican.
    Man in joy is dear to his kin; but they will have to part.
--- GNU bash, version 5.0.18(1)-release (x86_64-motorshed-linux-gnu)