Hi,
In klck, since the last update (v3.71), I have the wrong time on my lock screen.
Kwgt and the klck editor show the right time (my current time zone, UTC+2), but on the lockscreen I get UTC time.
Exact same thing happening for me. Showing UTC time on lock screen, but the correct local time in the editor.
In the mean time, I'm going with this trick to print my UTC+2 time, in hh:mm 24h format, if that can help:
$tc(lpad, (df(hh)+2)%24, 2, 0)$:$df(mm)$
Mine is doing the same thing, editor is correct and all settings are what they should be but the actual klwp background is 6 hours ahead.