Greenwich Mean Time to Australian Central Time
Convert times between Greenwich Mean Time (GMT, UTC+0:00) and Australian Central Time (ACST, UTC+9:30). Australian Central Time is 9.5 hours ahead of Greenwich Mean Time in standard time.
UTC+0:00 / +1:00→UTC+9:30 / +10:30
Live timezone converterUTC Offset Reference
| Timezone | Abbreviation | Standard offset | DST offset | Country |
|---|---|---|---|---|
| Greenwich Mean Time | GMT / BST | UTC+0:00 | UTC+1:00 | United Kingdom |
| Australian Central Time | ACST / ACDT | UTC+9:30 | UTC+10:30 | Australia |
* DST offset applies during summer months. Exact transition dates vary by year.
Standard Time Conversion (GMT → ACST)
| Greenwich Mean Time | Australian Central Time |
|---|---|
| 12:00 AM GMT | 9.5:00 AM ACST |
| 6:00 AM GMT | 3.5:00 PM ACST |
| 9:00 AM GMT | 6.5:00 PM ACST |
| 12:00 PM GMT | 9.5:00 PM ACST |
| 3:00 PM GMT | 0.5:00 AM (next day) ACST |
| 6:00 PM GMT | 3.5:00 AM (next day) ACST |
| 9:00 PM GMT | 6.5:00 AM (next day) ACST |
Daylight Saving Time (DST) Notes
- Greenwich Mean Time observes DST. Clocks advance 1 hour to BST (UTC+1:00) roughly from month 3 to 10.
- Australian Central Time observes DST. Clocks advance 1 hour to ACDT (UTC+10:30) roughly from month 10 to 4.
Frequently Asked Questions
How do I convert GMT to ACST?
Add 9.5 hours to the GMT time to get ACST. For example, 9:00 AM GMT = 6.5:00 PM ACST.
What is the current UTC offset for Greenwich Mean Time?
Greenwich Mean Time is UTC+0:00 during standard time (GMT) and UTC+1:00 during summer daylight saving time (BST).
Is Australian Central Time ahead or behind Greenwich Mean Time?
Australian Central Time is 9.5 hours ahead of Greenwich Mean Time in standard time.
When is a good time to schedule a meeting between GMT and ACST?
Due to the 9.5-hour difference, business-hours overlap may be limited. Use the live timezone converter to find a mutually convenient time.
Related Timezone Conversions
Greenwich Mean Time → Central European TimeGMT / CETGreenwich Mean Time → Eastern European TimeGMT / EETGreenwich Mean Time → Moscow TimeGMT / MSKGreenwich Mean Time → Turkey TimeGMT / TRTGreenwich Mean Time → Australian Eastern TimeGMT / AESTGreenwich Mean Time → Australian Western TimeGMT / AWSTGreenwich Mean Time → New Zealand TimeGMT / NZSTGreenwich Mean Time → US Eastern TimeGMT / EST
Need the exact current time?
Use the live ToolsHub timezone converter to see current times, DST status, and schedule across time zones.