MegaEPG 1.0.1 has been released (see the Downloads section). The only change in the release is the automatic timezone detection. A big mess with one hour shifting should come to the end now. You don't need to specify the tzoffset parameter anymore (in fact it'll be ignored if the timezone data is successfully obtained from the Windows OS).
Before using the version, set your system timezone back to the Israel Daylight time (Israel timezone, daylight adjustment checkbox is checked).
You can skip this version if you never experienced the shifting problem (for example, you don't use the vista_he script). Linux users may still need to specify the tzoffset parameter if your version of wine fails to autodetect the system timezone.