Like I already said earlier your suggestion is just a hack to work around the fact that your tvguide.xml is wrong in the first place. Including such a hack (with all it's possible side-effects / bugs) in MP does not make much sense, especially since it seems you are the only one having this problem.
There has only been one more incident of wrong timezones in xmtlv data and the author of the grabber was happy to fix his grabber.
There has only been one more incident of wrong timezones in xmtlv data and the author of the grabber was happy to fix his grabber.
Greece