PST to GMT
PST and GMT explained
Pacific Time uses PST (UTC−8) as standard time and PDT (UTC−7) during daylight saving time, from the second Sunday in March to the first Sunday in November; the clocks change at 2am local time. It covers the US west coast and British Columbia, including Los Angeles, San Francisco, Seattle, Las Vegas and Vancouver. People often say "PST" all year; during daylight saving time the US west coast is on PDT.
Greenwich Mean Time (GMT) is UTC+0, the reference time at the Greenwich meridian. GMT itself never changes. The UK uses GMT only in winter: from the last Sunday in March to the last Sunday in October it is on BST (UTC+1), so "GMT" and "UK time" are an hour apart in summer.
The difference across the year
GMT compared with PT:
- 7 hours ahead (PDT and GMT) from the second Sunday in March to the first Sunday in November
- 8 hours ahead (PST and GMT) from the first Sunday in November to the second Sunday in March
PT changes its clocks and GMT doesn't, so the gap changes during the year. The converter above uses the rules for the date you pick.
Common times
| PT | GMT 7 hours ahead | GMT 8 hours ahead |
|---|---|---|
| 00:00 12am | 07:00 7am | 08:00 8am |
| 06:00 6am | 13:00 1pm | 14:00 2pm |
| 08:00 8am | 15:00 3pm | 16:00 4pm |
| 09:00 9am | 16:00 4pm | 17:00 5pm |
| 12:00 12pm | 19:00 7pm | 20:00 8pm |
| 15:00 3pm | 22:00 10pm | 23:00 11pm |
| 17:00 5pm | 00:00 12am, next day | 01:00 1am, next day |
| 18:00 6pm | 01:00 1am, next day | 02:00 2am, next day |
| 21:00 9pm | 04:00 4am, next day | 05:00 5am, next day |
How to use the converter
Pick a time and date under From; the time in GMT appears under To, with your own local time underneath. The date matters around clock changes, so set it for the day you mean. ⇄ swaps the two zones, Now goes back to the current time, and either zone can be changed to any city. The planner below lines up the whole day in both places and in yours.
Handy for
- Meetings between California and the UK or Europe
- Matching west coast times against logs in GMT/UTC
- Announcing a launch time to an international audience
Questions
What is the time difference between PST and GMT?
GMT is 7 hours ahead of PT from the second Sunday in March to the first Sunday in November, and 8 hours ahead from the first Sunday in November to the second Sunday in March.
Do PT and GMT change for daylight saving?
Pacific Time switches from PST (UTC−8) to PDT (UTC−7) on the second Sunday in March and back on the first Sunday in November. GMT never changes: it is UTC+0 all year.
How do I convert PST to GMT?
Add 7 hours when it is PDT and GMT; add 8 hours when it is PST and GMT. Or use the converter above: it applies the rules for the exact date you pick.
More time zone pages
Or open the full Time Zones meeting planner and world clock.