Convert Pacific Standard Time to Greenwich Mean Time (PST to GMT)

Understanding PST and GMT Time Zones

Pacific Standard Time (PST)

Pacific Standard Time is observed in undefined and uses the offset UTC-8. Major cities in this time zone include Los Angeles, San Francisco, Seattle, Portland. This time zone serves a significant global region with important economic and cultural hubs.

Greenwich Mean Time (GMT)

Greenwich Mean Time operates at UTC+0, covering undefined. Key cities include London, Dublin, Lisbon. The 8-hour forward offset from PST means that when professionals in Los Angeles start their workday at 9:00 AM, it is already 5:00 PM in London.

PST is also commonly referred to as Pacific Time, PT, West Coast time, LA time, California time. GMT is also known as London time, UK time, British time, England time. So if you are searching for Pacific Time to London time, this is the same conversion as PST to GMT.

Complete PST to GMT Conversion Table

The table below shows every two-hour increment converted from Pacific Standard Time to Greenwich Mean Time. Business hours (9 AM – 5 PM) are highlighted for easy scheduling reference.

Times shown in 12-hour and 24-hour format. Last updated 2026-03-09.

Scheduling Between PST and GMT

When coordinating deliverables across PST and GMT, set deadlines in the earlier time zone to avoid end-of-day confusion. A "5 PM deadline" should specify which zone to prevent missed deliveries due to the 8-hour offset.

The significant 8-hour gap between PST and GMT means that finding overlapping working hours requires compromise from at least one side. Consider adopting asynchronous workflows — recorded video updates, shared documents, and time-zone-aware project management tools — to supplement the limited real-time overlap.

Travel Between Los Angeles and London

Flight times between Los Angeles and London often appear misleading because of the time zone shift. A departure at 10:00 AM PST arriving at 12:00 AM GMT may look long, but remember to factor in the 8-hour offset.

Medical experts recommend allowing approximately one day of adjustment per hour of time difference. For the 8-hour shift between PST and GMT, plan for roughly one week of gradual adjustment for optimal performance.

Daylight Saving Time Considerations

Countries near the equator — including Singapore, most of Africa, and parts of South America — do not observe DST, making their offsets constant year-round. This simplifies scheduling compared to US or European zones.

For the PST to GMT conversion specifically: PST (UTC-8) and GMT (UTC+0) both observe DST. When both zones transition on different dates, the offset temporarily shifts by one hour for a few weeks. Always verify during March–April and October–November.

Related Time Zone Conversions

References & Resources

• TimeAndDate.com — World Time Zones
• NIST — Official US Time Standard
• IANA Time Zone Database
• Wikipedia — Time Zone Abbreviations
• WorldTimeServer — Current Times Worldwide
• Royal Observatory Greenwich

Frequently Asked Questions