The short answer

7pm in Australian Central Daylight Time is 10:30am in Greenwich Mean Time.

Australian Central Daylight Time is 8 hours 30 minutes ahead of Greenwich Mean Time. It falls outside the 9-to-5 in Australian Central Daylight Time but lands inside working hours in Greenwich Mean Time.

Australian Central Daylight Time☾
7pm
Greenwich Mean Time☀
10:30am
Right now
3:37amACST · UTC+09:30 · Thu, Jun 25
7:07pmBST · UTC+01:00 · Wed, Jun 24
Read across to convert
Australian Central Daylight Time
ACST · UTC+09:30
3:37am ☾
Greenwich Mean Time
BST · UTC+01:00
7:07pm ☾
Pinned7pmAustralian Central Daylight Time=10:30amGreenwich Mean Time
12amThu
3:30pmWed ·−1d
WORK
1am
4:30pmWed ·−1d
WORK
2am
5:30pmWed ·−1d
NOW
3am
6:30pmWed ·−1d
4am
7:30pmWed ·−1d
5am
8:30pmWed ·−1d
6am
9:30pmWed ·−1d
7am
10:30pmWed ·−1d
8am
11:30pmWed ·−1d
9am
WORK
12:30amThu
10am
WORK
1:30am
11am
WORK
2:30am
12pm
WORK
3:30am
1pm
WORK
4:30am
2pm
WORK
5:30am
3pm
WORK
6:30am
4pm
WORK
7:30am
5pm
8:30am
6pm
9:30am
WORK
PINNED
7pm
10:30am
WORK
8pm
11:30am
WORK
9pm
12:30pm
WORK
10pm
1:30pm
WORK
11pm
2:30pm
WORK
daylightnightworking hoursoverlap
Convert a specific time12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
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.

3:37am
Cities on this clock
Adelaide
Greenwich Mean Time
BST · UTC+01:00
7:07pm
Cities on this clock
LondonBirminghamGlasgowManchester

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 7pm in Australian Central Daylight Time, what time is it in Greenwich Mean Time?
7pm in Australian Central Daylight Time is 10:30am in Greenwich Mean Time. It falls outside the 9-to-5 in Australian Central Daylight Time but lands inside working hours in Greenwich Mean Time. Use the hour-by-hour table above to read any other time across.
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.