Compare GMT vs PST

How to Find the Time Difference Between GMT and PST

1. Open the GMT vs PST page: Visit https://www.xconvert.com/time-converter/gmt-vs-pst to load a visual comparison grid with GMT and PST already shown as separate rows. This is useful when you are planning a call between London-based partners working on Greenwich Mean Time and teams on Pacific Standard Time in cities such as Los Angeles, Vancouver, or Tijuana, where an 8-hour gap can affect whether a meeting lands in the workday or before dawn.

2. Add comparison cities: Click + Add City and search for cities that matter to your schedule, such as London for UK business, Los Angeles for West Coast media and tech, or Manila if you need to compare Pacific Standard Time usage in the Philippines for support or operations coordination. This helps remote teams, agencies, and customer support managers see whether a GMT morning overlaps with a practical PST work window.

3. Select a working time range on the grid: Click Select, then drag across the GMT row to highlight a block of time in purple, such as 9:00 to 12:00 GMT, which corresponds to 1:00 to 4:00 PST. You can drag the center of the highlighted block to move it later in the day or use the left and right handles to resize it, which is useful when testing whether a UK afternoon review or publishing window still fits into a California team’s early work hours.

4. Export and share the result: Once a time range is selected, use the export options for ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link. This is practical when you need to send a confirmed GMT-to-PST meeting slot to a distributed product team, a sales prospect on the US West Coast, or a broadcast operations group that needs the event to appear correctly in each person’s local calendar.

GMT vs PST Offset Explained

GMT is UTC+0 and PST is UTC-8, so PST is 8 hours behind GMT. In practical terms, when it is 9:00 GMT, it is 1:00 PST; when it is 12:00 GMT, it is 4:00 PST; when it is 15:00 GMT, it is 7:00 PST; and when it is 18:00 GMT, it is 10:00 PST. This gap matters for real scheduling because a normal morning in the UK or other GMT locations often falls into very early morning on the Pacific coast.

GMT is a standard-time abbreviation, and its daylight-saving counterpart is IST. PST is also a standard-time abbreviation, and its daylight-saving counterpart is PDT. That means the GMT vs PST comparison is specifically for standard time, and seasonal clock changes can affect whether the same meeting keeps the same hour relationship throughout the year.

GMT is used across countries including the United Kingdom, Ireland, Iceland, Ghana, Senegal, Sierra Leone, Liberia, Mali, Guinea, Guinea-Bissau, Burkina Faso, Gambia, Togo, Mauritania, Sao Tome and Principe, Saint Helena, Ivory Coast, Guernsey, Jersey, and the Isle of Man. PST is used in parts of Canada, Mexico, the Philippines, and the United States, making this comparison especially relevant for international customer support, software releases, film and streaming coordination, and transatlantic vendor communication.

For business planning, the 8-hour difference means GMT-based teams often need to schedule later in their day to reach PST colleagues during standard office hours. A 15:00 GMT meeting lines up with 7:00 PST, which may work for early-start engineering or trading teams, while 18:00 GMT = 10:00 PST is usually more practical for regular West Coast office schedules, client demos, and cross-border project reviews.

Frequently Asked Questions

What is the time difference between GMT and PST?

PST is 8 hours behind GMT. Because GMT is UTC+0 and PST is UTC-8, a workday in GMT starts much earlier than the corresponding workday in PST, which is why UK-to-California meetings are often scheduled in the late GMT afternoon.

If it is 9:00 GMT, what time is it in PST?

9:00 GMT = 1:00 PST. This is a useful benchmark for teams scheduling early UK check-ins, because a 9 AM GMT meeting reaches the Pacific time zone at 1 AM, which is generally unsuitable for standard business communication unless the receiving team is operating overnight.

If it is 12:00 GMT, what time is it in PST?

12:00 GMT = 4:00 PST. That means a noon meeting on GMT lands at 4 AM on Pacific Standard Time, which can be relevant for overnight operations, incident response teams, or global infrastructure monitoring, but it is usually too early for normal office meetings.

If it is 15:00 GMT, what time is it in PST?

15:00 GMT = 7:00 PST. This can work for companies with early-start teams on the US and Canadian West Coast, especially in technology, logistics, and media production, where staff may begin before standard office hours to coordinate with Europe.

If it is 18:00 GMT, what time is it in PST?

18:00 GMT = 10:00 PST. This is one of the more practical overlap points for live calls, sales demos, agency reviews, and partner meetings because it places the GMT side in early evening and the PST side in mid-morning business hours.

Does GMT always stay 8 hours ahead of PST?

For the standard-time comparison, yes: GMT is compared here against PST with PST 8 hours behind GMT. However, both abbreviations have daylight-saving counterparts—IST for GMT and PDT for PST—so seasonal clock changes can alter the relationship when regions are not on standard time.

Is GMT the same as UK time and PST the same as California time?

GMT is used by the United Kingdom during standard time, but it is also used in many other countries including Ireland, Iceland, Ghana, Senegal, and Liberia. PST is commonly associated with the US West Coast, including California, but it also appears in parts of Canada, Mexico, and the Philippines, so the abbreviations cover broader geographic use than just one country each.

When is the best meeting window between GMT and PST?

A practical overlap often appears later in the GMT day, because PST is 8 hours behind. For example, 18:00 GMT = 10:00 PST, which is often suitable for product reviews, legal discussions, customer onboarding, and cross-border management meetings where both sides need to stay within normal business hours.

Why do companies compare GMT and PST so often?

GMT and PST are frequently compared because they connect major business regions across Europe and the Pacific side of North America. This matters for software deployment planning, entertainment and streaming operations, ecommerce support coverage, and agency-client communication where teams in the UK or other GMT countries need reliable overlap with colleagues or customers in the United States, Canada, or Mexico.