Compare BST vs PST
View the current BST to PST time difference, check how daylight saving affects the gap, and find practical meeting hours.
How to Find the Time Difference Between BST and PST
Open the BST vs PST converter page: Go to
https://www.xconvert.com/time-converter/bst-vs-pstto load a visual comparison grid with BST and PST already shown as separate rows across a 24-hour timeline. This page is useful when you are scheduling a London-to-US West Coast call, coordinating a handoff between a UK product team and a California engineering team, or checking whether a support shift overlaps with business hours in both regions.Add relevant comparison cities: Click + Add City and add cities such as London, Los Angeles, and San Francisco to compare real business hubs that use these time standards in practice. This is especially helpful for industries like software, media, gaming, and venture-backed startups, where teams often work between the UK and California and need to see whether a BST afternoon overlaps with the PST morning.
Drag to select a workable meeting window: Click Select to enable selection mode, then drag across the BST row from 2:00 PM to 4:00 PM BST to highlight that range in purple; on the PST row, that same window appears as 6:00 AM to 8:00 AM PST during the standard 8-hour difference period. This makes it immediately clear that a mid-afternoon meeting in Britain can require a very early start in Los Angeles, which matters for sales demos, production support, and cross-Atlantic standups.
Export and share the selected time: After selecting the range, use the export options for ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link depending on how you want to distribute the meeting. For example, an operations manager can send the ICS file to a distributed UK-US team so each person sees the event in local time automatically, or use the Share link in Slack or email to confirm a launch call without manually rewriting the time for every participant.
BST vs PST Offset Explained
BST is usually 8 hours ahead of PST. When it is 9:00 AM in PST, it is 5:00 PM in BST on the same day. That means the most practical overlap for live meetings is often between 4:00 PM and 6:00 PM BST, which corresponds to 8:00 AM to 10:00 AM PST, a common window for UK-US West Coast coordination.
BST stands for British Summer Time, which is UTC+1, and it is used in the United Kingdom during the daylight saving period. PST stands for Pacific Standard Time, which is UTC-8, and it is used during standard time in places such as California, Washington, and parts of Canada including Vancouver’s standard-time period in British Columbia. The exact difference between UTC+1 and UTC-8 is 9 hours, but pages labeled “BST vs PST” are often used by people comparing the UK summer clock with the US Pacific standard label in a general sense, and in practical scheduling discussions many users are really trying to compare current UK time with the US West Coast clock.
Seasonal changes are important because BST does not run all year, and the US Pacific region also switches between standard and daylight time. In the UK, BST begins on the last Sunday in March when clocks move forward at 1:00 AM UTC, and BST ends on the last Sunday in October when clocks move back by one hour. In the United States, Pacific Time switches to PDT (UTC-7) on the second Sunday in March and returns to PST (UTC-8) on the first Sunday in November.
Because the UK and US change clocks on different dates, the time gap is not always the same during transition weeks. For most of the BST season, the UK is 8 hours ahead of Pacific Daylight Time, so 9:00 AM in Los Angeles is 5:00 PM in London. However, during the short periods between the March and October/November clock changes, the gap can temporarily shift, which is why checking a specific date on the converter is essential before booking investor calls, transatlantic interviews, or live customer onboarding sessions.
This matters in real-world business scheduling because London is a major center for finance, legal services, advertising, and international media, while the US Pacific coast includes major technology and entertainment hubs such as San Francisco, San Jose, Seattle, and Los Angeles. A UK team working a standard 9:00 AM to 5:00 PM BST day overlaps only partially with a West Coast team working 9:00 AM to 5:00 PM PST, and in winter there may be almost no same-day overlap beyond the UK late afternoon and the Pacific morning.
Frequently Asked Questions
What is the exact time difference between BST and PST?
BST is 9 hours ahead of PST when you compare the formal offsets directly: BST = UTC+1 and PST = UTC-8. That means when it is 12:00 PM noon in PST, it is 9:00 PM in BST. Many users also compare UK summer time to the current US West Coast local time, which may be PDT instead of PST, and in that case the difference is usually 8 hours rather than 9.
Why does the BST and PST time difference change during the year?
The difference changes because the United Kingdom and the US Pacific region start and end daylight saving time on different dates. The UK moves to BST on the last Sunday in March and back to GMT on the last Sunday in October, while the US Pacific region moves to daylight time on the second Sunday in March and back to standard time on the first Sunday in November. During those mismatch periods, the gap can be temporarily different from the usual pattern, which can affect flight planning, webinar scheduling, and customer support coverage.
Is London always 8 hours ahead of California?
No, London is not always 8 hours ahead of California. During much of the UK summer and US daylight period, London is 8 hours ahead of Pacific Daylight Time, so 10:00 AM in San Francisco is 6:00 PM in London. But if you are specifically comparing BST to PST, the formal difference is 9 hours, and around DST transition dates the practical gap can vary depending on the exact day.
What is the best meeting time for BST and PST teams?
A common meeting window is 4:00 PM to 6:00 PM BST, which maps to 8:00 AM to 10:00 AM PST when the 8-hour working overlap applies in the active DST season. This works well for product reviews, agency-client calls, and engineering standups because it stays inside the UK late workday and the US West Coast early morning. If one side needs a longer workshop, teams often rotate inconvenience by alternating between a UK-late slot and a California-early slot.
How do I convert BST to PST for a specific date?
Use the converter’s date picker at the top to choose the exact day first, because the answer can change around March, October, and November when daylight saving transitions occur. Then drag across the BST timeline to highlight the intended meeting window and read the corresponding PST row directly below it. This is much more reliable than memorizing a single fixed difference if you are booking recurring calls across quarter-end, conference season, or international travel dates.
Is PST the same as Pacific Time year-round?
No, PST is only the standard-time version of Pacific Time and uses UTC-8. During daylight saving time, much of the US West Coast uses PDT (Pacific Daylight Time), UTC-7, including large business centers such as Los Angeles, San Francisco, San Diego, and Seattle’s regional scheduling context in Pacific operations. If you are arranging meetings with US partners, it is important to confirm whether they mean “Pacific Time” generally or “PST” specifically.
When is the overlap between UK and US West Coast business hours?
If a UK team works 9:00 AM to 5:00 PM BST and a US West Coast team works 9:00 AM to 5:00 PM PST, there is effectively no overlap until the Pacific morning begins, which pushes the UK side into the late afternoon or evening. In practical terms, the most usable collaboration window is often 4:00 PM to 5:00 PM BST against 8:00 AM to 9:00 AM PST, or slightly wider when the Pacific side is on daylight time. This limited overlap is why many SaaS companies, digital agencies, and global support teams rely on async updates plus one short live sync each day.