The short answer
Australian Central Daylight Time is 9 hours 30 minutes ahead of British Summer Time.
Australian Central Daylight Time☀
10:18:30am
ACDT · UTC+10:30 · Thu, Oct 15
British Summer Time☾
12:48:30am
BST · UTC+01:00 · Thu, Oct 15
Read across to convert
Australian Central Daylight Time
ACDT · UTC+10:30
British Summer Time
BST · UTC+01:00
Click any row to pin that hour across both zones.
12amThu
2:30pmWed ·−1d
WORK1am
3:30pmWed ·−1d
WORK2am
4:30pmWed ·−1d
WORK3am
5:30pmWed ·−1d
4am
6:30pmWed ·−1d
5am
7:30pmWed ·−1d
6am
8:30pmWed ·−1d
7am
9:30pmWed ·−1d
8am
10:30pmWed ·−1d
9am
WORK11:30pmWed ·−1d
NOW
10am
WORK12:30amThu
11am
WORK1:30am
12pm
WORK2:30am
1pm
WORK3:30am
2pm
WORK4:30am
3pm
WORK5:30am
4pm
WORK6:30am
5pm
7:30am
6pm
8:30am
7pm
9:30am
WORK8pm
10:30am
WORK9pm
11:30am
WORK10pm
12:30pm
WORK11pm
1:30pm
WORKdaylightnightworking hoursoverlap
Best time to meet=
Closest workable window
Just outside the working window — early on one side, late on the other.
Australian Central Daylight Time
5pm–7pm
British Summer Time
7:30am–9:30am
Popular conversions
Quick reference.
9amAustralian Central Daylight Time=11:30pmBritish Summer Time · prev day
12pmAustralian Central Daylight Time=2:30amBritish Summer Time
3pmAustralian Central Daylight Time=5:30amBritish Summer Time
5pmAustralian Central Daylight Time=7:30amBritish Summer Time
9pmAustralian Central Daylight Time=11:30amBritish Summer Time
In context
What each side covers.
Australian Central Daylight Time
10:18amACDT · UTC+10:30
Cities on this clock
British Summer Time
12:48amBST · UTC+01:00
Cities on this clock
Related converters
Other popular pairs.
Pacific Time
4:48pm
India Standard Time
5:18am
Pacific Time to India12 hours 30 minutes behind
Eastern Daylight Time
7:48pm
Central European Time
1:48am
Eastern Time to Central Europe6 hours behind
India Standard Time
5:18am
Eastern Daylight Time
7:48pm
India to Eastern Time9 hours 30 minutes ahead
British Summer Time
12:48am
India Standard Time
5:18am
London to India4 hours 30 minutes behind
Pacific Daylight Time
4:48pm
Eastern Daylight Time
7:48pm
Pacific to Eastern Time3 hours behind
Central European Time
1:48am
India Standard Time
5:18am
Central Europe to India3 hours 30 minutes behind
Frequently asked
Quick answers about converting between Australian Central Daylight Time and British Summer Time. Can't find what you need? Email [email protected].
- What is the time difference between Australian Central Daylight Time and British Summer Time?
- Australian Central Daylight Time is 9 hours 30 minutes ahead of British Summer Time right now. We always show the live, daylight-saving-correct difference, so this figure already accounts for whichever side is observing summer time today.
- When it's 9am in Australian Central Daylight Time, what time is it in British Summer Time?
- 9am in Australian Central Daylight Time is 11:30pm in British Summer Time on the previous day. Use the hour-by-hour table above to read any other time across — find the row and read the matching cell in the other column.
- What's the best time for a call between Australian Central Daylight Time and British Summer Time?
- There's no comfortable 9-to-5 overlap between Australian Central Daylight Time and British Summer Time — they sit on opposite sides of the planet's working day. Plan for an early or late call on one side, or hand work off asynchronously.
- Does this account for daylight saving time?
- Yes. We track every clock change in both places, so the abbreviations you see — ACDT and BST — are the ones actually in effect right now, not a fixed all-year value. When either side changes its clocks, this page updates automatically.
- Why is the date sometimes different on each side?
- When two places are far enough apart, the same moment can fall on different calendar days. That is why some conversions are marked "previous day" or "next day" — it is the same instant in time, read off two clocks that crossed midnight at different points.