Thank you so much for backing me guys.
The dateline is basically straight, with a few detours not to burden the countries affected, and he same goes to the time zones.
China is a huge country which covers multiple time zones, nevertheless, whole of china is gmt+8.
Australia, is a different story, where they are over-machmir, and thus, you have cities, that don't just work with gmt+xt(hours), but: Perth gmt+8, Eucla gmt+8:45, Adelaide and Darwin gmt+9:30,Melbourne, Sydney, Hobart, Canberra and brisbane gmt+10, and finally Lord Howe gmt+10:30.