What is the time difference between UK and Australia?

The time difference between the United Kingdom (UK) and Australia varies depending on which Australian state or territory you are referring to, as Australia spans multiple time zones. Here are the time differences between the UK and major cities in Australia:

1. Adelaide (South Australia):

- During UK Summer Time (BST) [March-October]: UTC+9:30 (9 hours and 30 minutes ahead of the UK)

- During UK Winter Time (GMT) [October-March]: UTC+10:30 (10 hours and 30 minutes ahead of the UK)

2. Brisbane (Queensland):

- During UK Summer Time (BST) [March-October]: UTC+9 (9 hours ahead of the UK)

- During UK Winter Time (GMT) [October-March]: UTC+10 (10 hours ahead of the UK)

3. Canberra (Australian Capital Territory):

- During UK Summer Time (BST) [March-October]: UTC+9:30 (9 hours and 30 minutes ahead of the UK)

- During UK Winter Time (GMT) [October-March]: UTC+10:30 (10 hours and 30 minutes ahead of the UK)

4. Darwin (Northern Territory):

- During UK Summer Time (BST) [March-October]: UTC+8:30 (8 hours and 30 minutes ahead of the UK)

- During UK Winter Time (GMT) [October-March]: UTC+9:30 (9 hours and 30 minutes ahead of the UK)

5. Melbourne (Victoria):

- During UK Summer Time (BST) [March-October]: UTC+9:30 (9 hours and 30 minutes ahead of the UK)

- During UK Winter Time (GMT) [October-March]: UTC+10:30 (10 hours and 30 minutes ahead of the UK)

6. Perth (Western Australia):

- During UK Summer Time (BST) [March-October]: UTC+7 (7 hours ahead of the UK)

- During UK Winter Time (GMT) [October-March]: UTC+8 (8 hours ahead of the UK)

7. Sydney (New South Wales):

- During UK Summer Time (BST) [March-October]: UTC+9 (9 hours ahead of the UK)

- During UK Winter Time (GMT) [October-March]: UTC+10 (10 hours ahead of the UK)

Australia observes daylight saving time (DST) in some of its states during specific periods of the year, which further alters the time difference from the UK during those times.

Remember that while the Australian mainland is divided into time zones, outlying Australian territories such as Christmas Island, Cocos (Keeling) Islands, and Norfolk Island have different time offsets. When planning travel or coordinating communication between the UK and specific regions of Australia, it's recommended to consult precise time zone information based on the city or location you are interested in.