The short answer
Australian Central Daylight Time is 8 hours 30 minutes ahead of Greenwich Mean Time.
Australian Central Daylight Time☾
10:43:31pm
ACST · UTC+09:30 · Wed, Jun 24
Greenwich Mean Time☀
2:13:31pm
BST · UTC+01:00 · Wed, Jun 24
Read across to convert
Australian Central Daylight Time
ACST · UTC+09:30
Greenwich Mean Time
BST · UTC+01:00
Click any row to pin that hour across both zones.
12amWed
3:30pmTue ·−1d
WORK1am
4:30pmTue ·−1d
WORK2am
5:30pmTue ·−1d
3am
6:30pmTue ·−1d
4am
7:30pmTue ·−1d
5am
8:30pmTue ·−1d
6am
9:30pmTue ·−1d
7am
10:30pmTue ·−1d
8am
11:30pmTue ·−1d
9am
WORK12:30amWed
10am
WORK1:30am
11am
WORK2:30am
12pm
WORK3:30am
1pm
WORK4:30am
2pm
WORK5:30am
3pm
WORK6:30am
4pm
WORK7:30am
5pm
8:30am
6pm
9:30am
WORK7pm
10:30am
WORK8pm
11:30am
WORK9pm
12:30pm
WORKNOW
10pm
1:30pm
WORK11pm
2:30pm
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
4pm–7pm
Greenwich Mean Time
7:30am–10:30am
Popular conversions
Quick reference.
9amAustralian Central Daylight Time=12:30amGreenwich Mean Time
12pmAustralian Central Daylight Time=3:30amGreenwich Mean Time
3pmAustralian Central Daylight Time=6:30amGreenwich Mean Time
5pmAustralian Central Daylight Time=8:30amGreenwich Mean Time
9pmAustralian Central Daylight Time=12:30pmGreenwich Mean Time
In context
What each side covers.
Australian Central Daylight Time
10:43pmACST · UTC+09:30
Cities on this clock
Greenwich Mean Time
2:13pmBST · UTC+01:00
Cities on this clock
Related converters
Other popular pairs.
Pacific Time
6:13am
India Standard Time
6:43pm
Pacific Time to India12 hours 30 minutes behind
Eastern Standard Time
9:13am
Central European Time
3:13pm
Eastern Time to Central Europe6 hours behind
India Standard Time
6:43pm
Eastern Standard Time
9:13am
India to Eastern Time9 hours 30 minutes ahead
Greenwich Mean Time
2:13pm
India Standard Time
6:43pm
London to India4 hours 30 minutes behind
Pacific Standard Time
6:13am
Eastern Standard Time
9:13am
Pacific to Eastern Time3 hours behind
Central European Time
3:13pm
India Standard Time
6:43pm
Central Europe to India3 hours 30 minutes behind
Frequently asked
Quick answers about converting between Australian Central Daylight Time and Greenwich Mean Time. Can't find what you need? Email [email protected].
- What is the time difference between Australian Central Daylight Time and Greenwich Mean Time?
- Australian Central Daylight Time is 8 hours 30 minutes ahead of Greenwich Mean 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 Greenwich Mean Time?
- 9am in Australian Central Daylight Time is 12:30am in Greenwich Mean Time. 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 Greenwich Mean Time?
- There's no comfortable 9-to-5 overlap between Australian Central Daylight Time and Greenwich Mean 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 — ACST 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.