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PST to GMT Time

Convert Pacific Standard Time (PST) to Greenwich Mean Time (GMT) effortlessly for accurate cross-continental scheduling, helping professionals, students, and travelers coordinate global events or appointments on time.

  • Free
  • Instant results
  • Runs in your browser
In short

GMT (UTC+0) is 8 hours ahead of PST (UTC−8) in standard time. 10:20 PM PST is 6:20 AM the next day GMT. During daylight saving time (roughly March to early November) the gap is 7 hours, so 10:20 PM PDT is 5:20 AM the next day GMT.

About PST to GMT Time

PST covers Los Angeles, San Francisco, Seattle, Las Vegas and Vancouver. GMT covers Reykjavik and Accra, and the reference for every other zone.

Working days overlap between 09:00 and 11:00 PST, which is 16:00–18:00 in GMT. That window is where calls land without anyone working late.

The clocks do not change on the same day, so a recurring meeting can shift by an hour in March and again in November. Check any standing call in the two weeks after each change.

How it works

GMT / UTC is 8 hours ahead of Pacific Time (Los Angeles) between November and March, and 7 hours ahead the rest of the year.

  1. Take the PST time you want to convert.
  2. Add 8 hours between autumn and spring, or 7 hours during daylight saving.
  3. Roll the date forward or back if the result crosses midnight.

The gap changes because the two places start and end daylight saving on different dates — for a few weeks each spring and autumn the difference is an hour off its usual value. The converter above uses the live IANA time zone database, so it is right on those days too.

Zone details: PST is −8 in winter and −7 in summer (UTC), GMT is +0 all year.

Examples

A working day in PST, seen from GMT (during daylight saving):

PST to GMT at a glance
PSTGMT
09:00 PST16:00 GMT
12:00 PST19:00 GMT
15:00 PST22:00 GMT
18:00 PST01:00 GMT (next day)
21:00 PST04:00 GMT (next day)

Meetings usually work best where the two working days overlap. Drag the timeline above to see the overlap for any hour, or use the full time zone converter for any other pair of cities.

PST to GMT Time: frequently asked questions

What is the time difference between PST and GMT?
GMT is 8 hours ahead of PST in standard time (PST is UTC−8, GMT is UTC+0). The gap can change by an hour for part of the year because PST observes daylight saving (PDT) and GMT does not observe daylight saving.
What is 9 AM PST in GMT?
9:00 AM PST is 5:00 PM GMT (standard time).
Where is PST used?
Pacific Standard Time (UTC−8) is used in the US West Coast (Los Angeles, Seattle).
Where is GMT used?
Greenwich Mean Time (always UTC+0; the UK switches to BST in summer) (UTC+0) is used in the UK in winter, Iceland and parts of West Africa.