Convert PST to GMT
See the 8-hour time difference from Pacific Standard Time to Greenwich Mean Time with a live conversion table and meeting planner.
How to Convert PST to GMT
Open the PST to GMT converter page: Go to https://www.xconvert.com/time-converter/pst-to-gmt-converter. The page is built for people comparing Pacific Time with Greenwich Mean Time, which is useful when scheduling calls between teams in Los Angeles, San Francisco, Seattle, and London-based operations that use GMT in winter or GMT year-round for global coordination.
Add comparison cities relevant to your schedule: Click “+ Add City” and add cities such as London, Reykjavik, and Dublin if you are coordinating with finance, media, SaaS, or customer support teams that often work on GMT or near-GMT schedules. You can also add New York or Dubai to compare a wider handoff chain if your company runs West Coast engineering, UK sales, and Middle East operations on the same project timeline.
Drag across the grid to select a PST meeting window: Click “Select” to enter selection mode, then drag across the PST row from 9 AM to 11 AM PST to highlight that period in purple. That selection converts to 5 PM to 7 PM GMT, which is often workable for late-afternoon UK coordination but too late for some government, banking, or logistics teams that finish at 5 or 6 PM local time.
Move, resize, and export the selected time: Drag the purple selection by its center to test alternatives like 7 AM to 9 AM PST, or use the left and right handles to fine-tune the slot for a product demo, trading handoff, or support escalation. Once selected, use ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link so everyone from a California engineering team to a GMT-based client sees the meeting in their own local time automatically.
Understanding the PST to GMT Time Difference
PST is UTC-8 and GMT is UTC+0, so PST is 8 hours behind GMT. That means when it is 9:00 AM PST, it is 5:00 PM GMT, and when it is 6:00 PM PST, it is 2:00 AM GMT the next day. This fixed relationship applies only when Pacific Time is specifically on Pacific Standard Time, not on daylight saving time.
The difference changes seasonally because much of the US West Coast observes daylight saving time, while GMT itself does not shift. In the United States, daylight saving time starts on the second Sunday in March and ends on the first Sunday in November; during that period, Pacific Time becomes PDT (UTC-7), so the gap to GMT becomes 7 hours instead of 8. For example, in January, 9 AM Pacific = 5 PM GMT, but in July, 9 AM Pacific daylight time = 4 PM GMT.
This distinction matters for real scheduling. Companies in California’s technology sector, including firms in the San Francisco Bay Area, Los Angeles, San Diego, and Seattle’s broader West Coast collaboration network, often plan recurring calls with UK, Icelandic, or globally distributed teams months in advance. If a recurring meeting is set for 8 AM Pacific in February, it lands at 4 PM GMT, but the same local Pacific meeting time in April lands at 3 PM GMT, which can shift attendance for legal, finance, and operations teams.
GMT is commonly used as a reference standard in aviation, shipping, defense coordination, and some multinational scheduling systems, even though the UK itself uses British Summer Time (BST, UTC+1) during summer. That means if you are speaking specifically about GMT, you should treat it as UTC+0 year-round. If your counterpart says they are in London, you should verify whether they mean GMT in winter or BST in summer, because that changes the real meeting time by an additional hour.
Best Times for Calls and Meetings Between PST and GMT
Because PST is 8 hours behind GMT, the most practical overlap usually happens during the PST morning and GMT late afternoon. A reliable business window is 7:00 AM-9:00 AM PST = 3:00 PM-5:00 PM GMT, which works well for software standups, agency-client reviews, and same-day project approvals between the US West Coast and GMT-based teams.
Another strong option is 8:00 AM-10:00 AM PST = 4:00 PM-6:00 PM GMT. This is often the last comfortable slot for UK-adjacent or GMT-based business users before the end of the local workday, and it is commonly used by SaaS sales teams, media buyers, and cross-border support managers who need both sides online at once.
If you need a narrower, high-attendance slot, 9:00 AM-11:00 AM PST = 5:00 PM-7:00 PM GMT can work for urgent reviews, but it pushes the GMT side into evening hours. This timing is more suitable for product launches, incident response, and executive check-ins than for routine weekly meetings, especially if the GMT participants are in industries with stricter office hours such as banking, public sector administration, or freight operations.
Meetings after 12:00 PM PST are usually poor for GMT because 12:00 PM PST = 8:00 PM GMT. Likewise, very early GMT meetings translate into impractical Pacific hours; for example, 9:00 AM GMT = 1:00 AM PST, so a standard European morning meeting is not realistic for California-based teams unless it is a one-time event tied to a deadline, live broadcast, or market-moving announcement.
For recurring meetings, many distributed teams settle on 7:30 AM or 8:00 AM PST because those times preserve a normal afternoon in GMT while avoiding pre-7 AM starts on the US West Coast. This is especially common in cloud software, game development, digital marketing, and international customer success teams that need daily or weekly overlap without forcing one side into permanent after-hours work.
Frequently Asked Questions
What is the time difference between PST and GMT?
PST is 8 hours behind GMT because PST = UTC-8 and GMT = UTC+0. So if it is 10:00 AM PST, it is 6:00 PM GMT on the same day; if it is 8:00 PM PST, it is 4:00 AM GMT the next day.
When is 9 AM PST in GMT?
9:00 AM PST is 5:00 PM GMT. This conversion is common for scheduling West Coast business calls with teams using GMT-based schedules, especially for late-afternoon check-ins, contract reviews, or customer onboarding sessions.
Does the difference between PST and GMT change during DST?
Yes, the difference changes when Pacific Time switches to daylight saving time. During standard time, PST is 8 hours behind GMT, but from the second Sunday in March to the first Sunday in November, Pacific Time becomes PDT (UTC-7), making the difference 7 hours instead.
What is the best meeting time between PST and GMT?
The best recurring meeting window is usually 7:00 AM-10:00 AM PST, which converts to 3:00 PM-6:00 PM GMT. This range gives California-based teams a manageable morning slot and GMT participants a same-day afternoon slot, which is why it is widely used for engineering syncs, agency reviews, and international account management.
Is GMT the same as London time?
Not all year. London uses GMT (UTC+0) in winter but switches to BST (UTC+1) in summer, typically from the last Sunday in March to the last Sunday in October, so a “London time” meeting may be one hour ahead of GMT during those months.
How do I convert PST to GMT on https://www.xconvert.com?
On the converter page, use the visual grid rather than typing a time manually. Click “Select”, drag across the PST row to highlight a time block, then read the aligned GMT row to see the equivalent time instantly; you can then export the result through ICS, Google Calendar, Gmail, Copy to clipboard, or Share link for team coordination.
Why does my PST to GMT meeting shift in spring or fall?
The shift happens because Pacific Time observes daylight saving time while GMT does not. A meeting fixed at 9 AM Pacific local time will show as 5 PM GMT in winter but 4 PM GMT in summer, so recurring meetings with UK or GMT-based teams should be reviewed in March and November to avoid accidental schedule drift.