Portsmouth Time to PST Converter
PST is 8 hours behind GMT. 9:00 AM GMT = 1:00 AM PST.
PST is 8 hours behind GMT at the moment. To convert Portsmouth Time to PST, subtract 8 hours from the Portsmouth Time time: 9:00 AM GMT = 1:00 AM PST.
Portsmouth Time (Portsmouth time) is used in Portsmouth, UK. PST (Pacific Time) is used in Los Angeles, San Francisco, Seattle, Las Vegas, Portland, Vancouver.
PST here means Pacific Standard Time, not Philippine Standard Time.
Portsmouth Time to PST time conversion table
Portsmouth Time to PST on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| Portsmouth Time | PST |
|---|---|
| 12:00 AM | 4:00 PM−1 |
| 1:00 AM | 5:00 PM−1 |
| 2:00 AM | 6:00 PM−1 |
| 3:00 AM | 7:00 PM−1 |
| 4:00 AM | 8:00 PM−1 |
| 5:00 AM | 9:00 PM−1 |
| 6:00 AM | 10:00 PM−1 |
| 7:00 AM | 11:00 PM−1 |
| Portsmouth Time | PST |
|---|---|
| 8:00 AM | 12:00 AM |
| 9:00 AM | 1:00 AM |
| 10:00 AM | 2:00 AM |
| 11:00 AM | 3:00 AM |
| 12:00 PM | 4:00 AM |
| 1:00 PM | 5:00 AM |
| 2:00 PM | 6:00 AM |
| 3:00 PM | 7:00 AM |
| Portsmouth Time | PST |
|---|---|
| 4:00 PM | 8:00 AM |
| 5:00 PM | 9:00 AM |
| 6:00 PM | 10:00 AM |
| 7:00 PM | 11:00 AM |
| 8:00 PM | 12:00 PM |
| 9:00 PM | 1:00 PM |
| 10:00 PM | 2:00 PM |
| 11:00 PM | 3:00 PM |
Conversion table from Portsmouth Time to PST for 7 Nov 2026. A tick marks hours that fall between 9 AM and 5 PM in both places. +1 means the next day in PST, −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 Portsmouth Time to PST
Subtract 8 hours from the Portsmouth Time time to get PST.
Example: 9:00 AM GMT = 1:00 AM PST.
Across midnight: 1:00 AM GMT = 5:00 PM PST (previous day). The date changes, so always check the day as well as the hour.
Time difference between Portsmouth Time and PST
The time difference between Portsmouth Time and PST 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 – 7 Mar 2026: PST is 8 hours behind of Portsmouth Time.
- 8 Mar 2026 – 28 Mar 2026: PST is 7 hours behind of Portsmouth Time.
- 29 Mar 2026 – 24 Oct 2026: PST is 8 hours behind of Portsmouth Time.
- 25 Oct 2026 – 31 Oct 2026: PST is 7 hours behind of Portsmouth Time.
- 1 Nov 2026 – 31 Dec 2026: PST is 8 hours behind of Portsmouth Time.
Portsmouth Time and PST during daylight saving time
- 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).
- PST next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from PST (UTC−8) to PDT (UTC−7).
Best time for a meeting between Portsmouth Time and PST
Portsmouth Time and PST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 3:00 PM GMT, which is 7:00 AM PST.
Portsmouth Time to PST FAQ
What is the time difference between Portsmouth Time and PST?
Right now PST is 8 hours behind GMT. The gap changes 5 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM Portsmouth Time in PST?
9:00 AM GMT is 1:00 AM PST.
What is 12 PM (noon) Portsmouth Time in PST?
12:00 PM GMT is 4:00 AM PST.
Is PST ahead of or behind Portsmouth Time?
PST is 8 hours behind GMT, so it is earlier in PST than in Portsmouth Time.
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.
Does PST change for daylight saving time?
Yes. PST next changes on 14 Mar 2027, when clocks go forward one hour from PST to PDT.
What is the best time for a meeting between Portsmouth Time and PST?
Portsmouth Time and PST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 3:00 PM GMT, which is 7:00 AM PST.
Is PT the same as PST?
PST is the winter (standard) name of Pacific Time (PT). From March to November the same clocks are called PDT. This converter always uses the one in force on the date you choose.
Related conversions
Convert PST to Portsmouth Time
Convert Portsmouth Time to other time zones
Convert other time zones to PST
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.