I'm in Australia and it still shits me to tears that I can't mathematically communicate with Americans. We just changed one day and it was done.

That said, the Australian mainland is running 5 different timezones right now. Some zones are only 30 minutes apart. We also have a little island just off the coast of Sydney where the DST shift is 30 minutes. The entire planet does an hour. We've introduced this edge case for the sake of 400 people and some stick insects.