Cardiff Time to AEST Converter
AEDT is 11 hours ahead of GMT. 9:00 AM GMT = 8:00 PM AEDT.
AEDT is 11 hours ahead of GMT at the moment. To convert Cardiff Time to AEST, add 11 hours to the Cardiff Time time: 9:00 AM GMT = 8:00 PM AEDT.
Cardiff Time (Cardiff time) is used in Cardiff, UK. AEST (Australian Eastern Time) is used in New South Wales, Victoria, Tasmania, ACT; Queensland (Brisbane) all year.
Queensland stays on AEST all year. AEST (Australian Eastern Standard Time) is not in force right now: New South Wales is currently on AEDT. This page uses whichever name applies on the date you pick, so the numbers below say AEDT.
Cardiff Time to AEST time conversion table
Cardiff Time to AEST on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| Cardiff Time | AEST | Day |
|---|---|---|
| 12:00 AM GMT | 11:00 AM AEDT | — |
| 1:00 AM GMT | 12:00 PM AEDT | — |
| 2:00 AM GMT | 1:00 PM AEDT | — |
| 3:00 AM GMT | 2:00 PM AEDT | — |
| 4:00 AM GMT | 3:00 PM AEDT | — |
| 5:00 AM GMT | 4:00 PM AEDT | — |
| 6:00 AM GMT | 5:00 PM AEDT | — |
| 7:00 AM GMT | 6:00 PM AEDT | — |
| 8:00 AM GMT | 7:00 PM AEDT | — |
| 9:00 AM GMT | 8:00 PM AEDT | — |
| 10:00 AM GMT | 9:00 PM AEDT | — |
| 11:00 AM GMT | 10:00 PM AEDT | night |
| 12:00 PM GMT | 11:00 PM AEDT | night |
| 1:00 PM GMT | 12:00 AM AEDT | next day |
| 2:00 PM GMT | 1:00 AM AEDT | next day |
| 3:00 PM GMT | 2:00 AM AEDT | next day |
| 4:00 PM GMT | 3:00 AM AEDT | next day |
| 5:00 PM GMT | 4:00 AM AEDT | next day |
| 6:00 PM GMT | 5:00 AM AEDT | next day |
| 7:00 PM GMT | 6:00 AM AEDT | next day |
| 8:00 PM GMT | 7:00 AM AEDT | next day |
| 9:00 PM GMT | 8:00 AM AEDT | next day |
| 10:00 PM GMT | 9:00 AM AEDT | next day |
| 11:00 PM GMT | 10:00 AM AEDT | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert Cardiff Time to AEST
Add 11 hours to the Cardiff Time time to get AEST.
Example: 9:00 AM GMT = 8:00 PM AEDT.
Across midnight: 10:00 PM GMT = 9:00 AM AEDT (next day). The date changes, so always check the day as well as the hour.
Time difference between Cardiff Time and AEST
The time difference between Cardiff Time and AEST is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 1 Jan 2026 – 28 Mar 2026: AEST is 11 hours ahead of Cardiff Time.
- 29 Mar 2026 – 3 Apr 2026: AEST is 10 hours ahead of Cardiff Time.
- 4 Apr 2026 – 2 Oct 2026: AEST is 9 hours ahead of Cardiff Time.
- 3 Oct 2026 – 24 Oct 2026: AEST is 10 hours ahead of Cardiff Time.
- 25 Oct 2026 – 31 Dec 2026: AEST is 11 hours ahead of Cardiff Time.
Cardiff Time and AEST during daylight saving time
- Cardiff Time next changes on 28 Mar 2027: clocks go forward one hour at 00:59 local time, from GMT (UTC+0) to BST (UTC+1).
- AEST next changes on 4 Apr 2027: clocks go back one hour at 02:59 local time, from AEDT (UTC+11) to AEST (UTC+10).
Best time for a meeting between Cardiff Time and AEST
Cardiff Time and AEST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM GMT, which is 6:00 PM AEDT.
Cardiff Time to AEST FAQ
What is the time difference between Cardiff Time and AEST?
Right now AEDT is 11 hours ahead of GMT. The gap changes 5 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM Cardiff Time in AEST?
9:00 AM GMT is 8:00 PM AEDT.
What is 12 PM (noon) Cardiff Time in AEST?
12:00 PM GMT is 11:00 PM AEDT.
Is AEST ahead of or behind Cardiff Time?
AEDT is 11 hours ahead of GMT, so it is later in AEST than in Cardiff Time.
Does Cardiff Time change for daylight saving time?
Yes. Cardiff Time next changes on 28 Mar 2027, when clocks go forward one hour from GMT to BST.
Does AEST change for daylight saving time?
Yes. AEST next changes on 4 Apr 2027, when clocks go back one hour from AEDT to AEST.
What is the best time for a meeting between Cardiff Time and AEST?
Cardiff Time and AEST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM GMT, which is 6:00 PM AEDT.
Related conversions
Convert AEST to Cardiff Time
Convert Cardiff Time to other time zones
Convert other time zones to AEST
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.