AEST to Portsmouth Time Converter
GMT is 11 hours behind AEDT. 9:00 AM AEDT = 10:00 PM GMT (previous day).
GMT is 11 hours behind AEDT at the moment. To convert AEST to Portsmouth Time, subtract 11 hours from the AEST time: 9:00 AM AEDT = 10:00 PM GMT (previous day).
AEST (Australian Eastern Time) is used in New South Wales, Victoria, Tasmania, ACT; Queensland (Brisbane) all year. Portsmouth Time (Portsmouth time) is used in Portsmouth, UK.
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.
AEST to Portsmouth Time time conversion table
AEST to Portsmouth Time on 8 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| AEST | Portsmouth Time |
|---|---|
| 12:00 AM | 1:00 PM−1 |
| 1:00 AM | 2:00 PM−1 |
| 2:00 AM | 3:00 PM−1 |
| 3:00 AM | 4:00 PM−1 |
| 4:00 AM | 5:00 PM−1 |
| 5:00 AM | 6:00 PM−1 |
| 6:00 AM | 7:00 PM−1 |
| 7:00 AM | 8:00 PM−1 |
| AEST | Portsmouth Time |
|---|---|
| 8:00 AM | 9:00 PM−1 |
| 9:00 AM | 10:00 PM−1 |
| 10:00 AM | 11:00 PM−1 |
| 11:00 AM | 12:00 AM |
| 12:00 PM | 1:00 AM |
| 1:00 PM | 2:00 AM |
| 2:00 PM | 3:00 AM |
| 3:00 PM | 4:00 AM |
| AEST | Portsmouth Time |
|---|---|
| 4:00 PM | 5:00 AM |
| 5:00 PM | 6:00 AM |
| 6:00 PM | 7:00 AM |
| 7:00 PM | 8:00 AM |
| 8:00 PM | 9:00 AM |
| 9:00 PM | 10:00 AM |
| 10:00 PM | 11:00 AM |
| 11:00 PM | 12:00 PM |
Conversion table from AEST to Portsmouth Time for 8 Nov 2026. A tick marks hours that fall between 9 AM and 5 PM in both places. +1 means the next day in Portsmouth Time, −1 the previous day.
- ✓ marks 9 AM–5 PM in both places
- Greyed times are night in the destination (10 PM–6 AM)
How to convert AEST to Portsmouth Time
Subtract 11 hours from the AEST time to get Portsmouth Time.
Example: 9:00 AM AEDT = 10:00 PM GMT (previous day).
Across midnight: 1:00 AM AEDT = 2:00 PM GMT (previous day). The date changes, so always check the day as well as the hour.
Time difference between AEST and Portsmouth Time
The time difference between AEST and Portsmouth Time 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: Portsmouth Time is 11 hours behind of AEST.
- 29 Mar 2026 – 4 Apr 2026: Portsmouth Time is 10 hours behind of AEST.
- 5 Apr 2026 – 3 Oct 2026: Portsmouth Time is 9 hours behind of AEST.
- 4 Oct 2026 – 24 Oct 2026: Portsmouth Time is 10 hours behind of AEST.
- 25 Oct 2026 – 31 Dec 2026: Portsmouth Time is 11 hours behind of AEST.
AEST and Portsmouth Time during daylight saving time
- 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).
- Portsmouth 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).
Best time for a meeting between AEST and Portsmouth Time
AEST and Portsmouth Time have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM AEDT, which is 8:00 PM GMT.
AEST to Portsmouth Time FAQ
What is the time difference between AEST and Portsmouth Time?
Right now GMT is 11 hours behind AEDT. The gap changes 5 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM AEST in Portsmouth Time?
9:00 AM AEDT is 10:00 PM GMT (previous day).
What is 12 PM (noon) AEST in Portsmouth Time?
12:00 PM AEDT is 1:00 AM GMT.
Is Portsmouth Time ahead of or behind AEST?
GMT is 11 hours behind AEDT, so it is earlier in Portsmouth Time than in AEST.
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.
Does Portsmouth Time change for daylight saving time?
Yes. Portsmouth Time next changes on 28 Mar 2027, when clocks go forward one hour from GMT to BST.
What is the best time for a meeting between AEST and Portsmouth Time?
AEST and Portsmouth Time have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM AEDT, which is 8:00 PM GMT.
Related conversions
Convert Portsmouth Time to AEST
Convert AEST to other time zones
Convert other time zones to Portsmouth Time
Learn more
Updated 8 November 2026. Time zone data: IANA tz database.