Jim05 wrote: The half hour is ridiculous, most zones are in 1 hour increments. Id be happy to go forward and line up with the East
Central standard time in winter is approximately on the Warrnambool meridian, not any meridian in SA.
In summer we run on mid-Tasman time.
It would make more sense for SA as a whole and certainly anyone living west of Adelaide if we used geographical zone time and moved 1/2 hour back towards WA. Then if the early morning people want to have Summer time, the rest of the state west of the eastern edge where Adelaide is wouldn't suffer from having to get up before dawn.