Pacific Time is 8 hours behind UK Time right now (until Oct 24, 2026); the gap changes to 7 hours when clocks change for daylight saving time. So 12:00 PM BST = 4:00 AM PDT at the moment. (UK Time is on BST and Pacific Time is on PDT for daylight saving time right now.)
GMT to PST conversion table
| GMT | PDT when GMT is BST | PDT when GMT is GMT |
|---|---|---|
| 12:00 AM | 4:00 PM −1 day | 5:00 PM −1 day |
| 1:00 AM | 5:00 PM −1 day | 6:00 PM −1 day |
| 2:00 AM | 6:00 PM −1 day | 7:00 PM −1 day |
| 3:00 AM | 7:00 PM −1 day | 8:00 PM −1 day |
| 4:00 AM | 8:00 PM −1 day | 9:00 PM −1 day |
| 5:00 AM | 9:00 PM −1 day | 10:00 PM −1 day |
| 6:00 AM | 10:00 PM −1 day | 11:00 PM −1 day |
| 7:00 AM | 11:00 PM −1 day | 12:00 AM |
| 8:00 AM | 12:00 AM | 1:00 AM |
| 9:00 AM | 1:00 AM | 2:00 AM |
| 10:00 AM | 2:00 AM | 3:00 AM |
| 11:00 AM | 3:00 AM | 4:00 AM |
| 12:00 PM | 4:00 AM | 5:00 AM |
| 1:00 PM | 5:00 AM | 6:00 AM |
| 2:00 PM | 6:00 AM | 7:00 AM |
| 3:00 PM | 7:00 AM | 8:00 AM |
| 4:00 PM | 8:00 AM | 9:00 AM |
| 5:00 PM | 9:00 AM | 10:00 AM |
| 6:00 PM | 10:00 AM | 11:00 AM |
| 7:00 PM | 11:00 AM | 12:00 PM |
| 8:00 PM | 12:00 PM | 1:00 PM |
| 9:00 PM | 1:00 PM | 2:00 PM |
| 10:00 PM | 2:00 PM | 3:00 PM |
| 11:00 PM | 3:00 PM | 4:00 PM |
GMT and PST difference through 2027
The gap between the two zones on each date range, including daylight saving time changes:
| Dates | UK Time | Pacific Time | Difference |
|---|---|---|---|
| Sep 30, 2026 – Oct 24, 2026 | BST (UTC+1) | PDT (UTC−7) | PST 8 hours behind |
| Oct 25, 2026 – Oct 31, 2026 | GMT (UTC+0) | PDT (UTC−7) | PST 7 hours behind |
| Nov 1, 2026 – Mar 13, 2027 | GMT (UTC+0) | PST (UTC−8) | PST 8 hours behind |
| Mar 14, 2027 – Mar 27, 2027 | GMT (UTC+0) | PDT (UTC−7) | PST 7 hours behind |
| Mar 28, 2027 – Oct 30, 2027 | BST (UTC+1) | PDT (UTC−7) | PST 8 hours behind |
| Oct 31, 2027 – Nov 6, 2027 | GMT (UTC+0) | PDT (UTC−7) | PST 7 hours behind |
| Nov 7, 2027 – Dec 31, 2027 | GMT (UTC+0) | PST (UTC−8) | PST 8 hours behind |
Best time to meet or call
- When PST is 8 hours behind GMT: Standard 9 AM–5 PM working hours don't overlap. The best compromise is usually early morning in UK Time (8:00 AM–9:00 AM), which is 12:00 AM–1:00 AM in Pacific Time.
- When PST is 7 hours behind GMT: Working hours (9 AM–5 PM) overlap from 4:00 PM–5:00 PM GMT (9:00 AM–10:00 AM PST), about 1 hour.
About UK Time (GMT)
The UK uses GMT (UTC+0) in winter and British Summer Time, BST (UTC+1), from the last Sunday in March to the last Sunday in October. It's used in London, Manchester, Birmingham, Edinburgh, Cardiff and Belfast.
About Pacific Time (PST)
Pacific Time uses PST (UTC−8) in winter and PDT (UTC−7) during daylight saving time. It's used in Los Angeles, San Francisco, San Diego, Seattle, Portland, Las Vegas and Vancouver.
Frequently asked questions
What time is 12 PM GMT in PST?
12:00 PM BST is 4:00 AM PDT right now (Sep 30, 2026 to Oct 24, 2026). The answer changes when either zone changes its clocks for daylight saving time.
How many hours ahead or behind is PST from GMT?
Currently 8 hours behind GMT. During the year the difference is 8 hours behind GMT or 7 hours behind GMT, depending on daylight saving time. See the table on this page for exact dates.
Does GMT change for daylight saving time?
Yes. The UK uses GMT (UTC+0) in winter and British Summer Time, BST (UTC+1), from the last Sunday in March to the last Sunday in October.
Does PST change for daylight saving time?
Yes. Pacific Time uses PST (UTC−8) in winter and PDT (UTC−7) during daylight saving time.
What is the best time for a call between GMT and PST?
Working hours don't overlap. Early morning in UK Time or evening in Pacific Time usually works best.
More time zone conversions
- PST to GMT (reverse)
- EST to PST
- CST to PST
- MST to PST
- IST to PST
- GMT to IST
- GMT to EST
- UTC to PST
- HST to PST
- All time zones
Sources
Reviewed by Gurmej Singh, Founder, Divy Digital Hub · Last reviewed: Wednesday, September 30, 2026. All calculations run in your browser. Editorial policy.