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| State | Major cities | Time difference with HK* |
| Australia Capital Territory | Canberra | 2 hours faster |
| New South Wales | Sydney | 2 hours faster |
| Victoria | Melbourne | 2 hours faster |
| Queensland | Brisbane | 2 hours faster |
| South Australia | Adelaide | 1.5 hours faster |
| Northern Territory | Darwin | 1.5 hours faster |
| Western Australia | Perth | Same as Hong Kong |
| Tasmania | Hobart | 2 hours faster |
* Time Saving in Australia starts from the last Sunday in October and ends at the last Sunday in March. Within that period, the three time zones in Australia will be faster than Hong Kong for 1 extra hour.
Australia is located at the southern hemisphere. Therefore, the climate is of the opposite of Hong Kong, which is located in the northern hemisphere. Winter in Hong Kong is between November and February, and summer of Hong Kong. Australia, in contrast, is summer at that time.
Cities in northern region of Australia will be warmer than that of the south. The temperature of the major cities is listed below:
| Major Cities | State | Sept-Nov | Dec-Feb | Mar-May | Jun-Aug |
| Sydney | New South Wales | 11-24 | 19-35 | 11-25 | 5-15 |
| Melbourne | Victoria | 8-22 | 15-30 | 12-24 | 2-14 |
| Brisbane | Queensland | 13-28 | 22-36 | 13-28 | 6-21 |
| Adelaide | South Australia | 8-24 | 14-33 | 12-25 | 3-15 |
| Perth | Western Australia | 10-25 | 18-33 | 15-29 | 7-17 |
| Darwin | Northern Territory | 23-36 | 30-40 | 23-33 | 18-27 |
| Hobart | Tasmania | 6-18 | 9-24 | 7-20 | 0-8 |