GMT
UTC+0
Greenwich Mean Time
ACST
UTC+9.5
Australian Central Standard Time
GMT observes DST — offset shifts ±1h during transitions
Greenwich Mean Time (GMT) is 9.5 hours ahead Australian Central Standard Time (ACST). When it is noon in GMT, it is 8:30 PM in ACST. This offset may change during Daylight Saving Time transitions.
All 24 Hours — GMT to ACST
Click any row to see the full detail page. Current hour in GMT is highlighted.
Best Meeting Times — GMT & ACST
Recommended windows where both GMT and ACST participants are within working hours (8 AM–6 PM).
Tip: When scheduling between GMT and ACST, aim for the “Best” windows above. These times keep both parties within normal working hours, avoiding early-morning or late-evening fatigue. Note that one of these time zones observes Daylight Saving Time — the offset may shift ±1 hour around transition dates.
Related Time Zone Conversions
Frequently Asked Questions — GMT to ACST
Greenwich Mean Time (GMT) is 9.5 hours ahead of Australian Central Standard Time (ACST). GMT is UTC+0 and ACST is UTC+9.5. This offset may shift by ±1 hour during Daylight Saving Time transitions.
Live Now
GMT
UTC+1
20:37:49
Tuesday
ACST
UTC+9:30
05:07:49
Wednesday
Right now, 8 PM GMT = 4:30 AM ACST(+1 day)
Business Hours Quick Jump
Reverse Conversion
ACST to GMT
Australian Central Standard Time → Greenwich Mean Time
All Popular Pairs