PDT to BST Converter
Convert time between Pacific Daylight Time (PDT) and British Summer Time (BST)
Pacific Daylight Time (PDT)
British Summer Time (BST)
Time Difference
British Summer Time (BST) is 0 hours ahead of Pacific Daylight Time (PDT)
Select Date
Select Time
Quick Reference
| PDT | BST |
|---|---|
| 18:00 | 02:00 |
| 20:00 | 04:00 |
| 22:00 | 06:00 |
| 00:00 | 08:00 |
| 02:00 | 10:00 |
| 04:00 | 12:00 |
| 06:00 | 14:00 |
| 08:00 | 16:00 |
| 10:00 | 18:00 |
| 12:00 | 20:00 |
| 14:00 | 22:00 |
| 16:00 | 00:00 |
Top 10 Most Common Time Zones
| Abbreviation | Full Name | UTC Offset | Typical Use |
|---|---|---|---|
| UTC | Coordinated Universal Time | UTC ±0 | Global reference standard (servers, logs, APIs) |
| EST / EDT | Eastern (US) Time | UTC −5 / −4 | New York, Toronto — North American business hub |
| CST / CDT | Central (US) Time | UTC −6 / −5 | Chicago, Dallas — US central business region |
| PST / PDT | Pacific (US) Time | UTC −8 / −7 | San Francisco, Los Angeles — tech industry standard |
| GMT / BST | Greenwich Mean / British Summer Time | UTC 0 / +1 | UK, used globally as a reference with UTC |
| CET / CEST | Central European (Summer) Time | UTC +1 / +2 | Paris, Berlin, Amsterdam — EU business core |
| IST | India Standard Time | UTC +5:30 | India — major IT & outsourcing region |
| CST | China Standard Time | UTC +8 | Beijing, Shanghai — East Asia business hub |
| JST | Japan Standard Time | UTC +9 | Tokyo — finance & tech hub |
| AEST / AEDT | Australian Eastern (Daylight) Time | UTC +10 / +11 | Sydney, Melbourne — APAC regional business |
Why Time Zone Abbreviations Are Ambiguous
Unlike standardized identifiers (like America/New_York or Europe/London from the IANA tz database), abbreviations such as "CST" or "IST" are not globally unique. They can refer to different time zones depending on context — country, region, or even time of year (due to daylight saving time).
Common Ambiguous Time Zone Abbreviations
| Abbrev. | Common Meaning(s) | UTC Offset | Region(s) |
|---|---|---|---|
| CST | Central Standard Time / China Standard Time / Cuba Standard Time | UTC−6 / UTC+8 / UTC−5 | North America, China, Cuba |
| IST | Indian Standard Time / Irish Standard Time / Israel Standard Time | UTC+5:30 / UTC+1 / UTC+2 | India, Ireland, Israel |
| AST | Atlantic Standard Time / Arabia Standard Time | UTC−4 / UTC+3 | Caribbean, Canada, Middle East |
| PST | Pacific Standard Time / Philippine Standard Time | UTC−8 / UTC+8 | North America, Philippines |
| EST | Eastern Standard Time (North America / Australia) | UTC−5 / UTC+10 | North America, Australia |
✅ Best Practice
To avoid ambiguity, always:
- Use IANA tz identifiers — e.g.,
America/New_Yorkinstead of "EST" - Specify UTC offset explicitly — e.g.,
UTC−5when abbreviations must be used - Include the full timezone name — e.g., "Eastern Standard Time (EST)" with UTC offset
Related Time Zone Conversions
About PDT to BST Time Conversion
Converting time between Pacific Daylight Time (PDT) and British Summer Time (BST) is essential for transatlantic business coordination between the US West Coast and the United Kingdom. PDT is UTC-7 (used March to November during daylight saving time), while BST is UTC+1 (used March to late October). BST is 8 hours ahead of PDT, creating a significant but manageable time difference for international business operations.
This converter is valuable for multinational companies, tech firms, financial services, creative agencies, and any organization coordinating between Silicon Valley, Seattle, Los Angeles, and London, Manchester, or other UK cities. Understanding the time difference helps optimize meeting schedules and maintain productive global teams.
Common Use Cases for PDT to BST Conversion
Business & Work
- Scheduling meetings between Silicon Valley and London tech companies
- Coordinating international software development and support teams
- Managing financial transactions between US and UK markets
- Planning transatlantic business calls and video conferences
Personal & Travel
- Planning travel from Pacific region to UK
- Coordinating with family and friends in the United Kingdom
- Scheduling international virtual events
- Attending UK-based online conferences and courses
Time Zone Information
Pacific Daylight Time (PDT)
- UTC Offset: UTC-7 (UTC-8 during PST)
- IANA Timezone: America/Los_Angeles
- Daylight Saving: Second Sunday in March to First Sunday in November
- Major Cities: Los Angeles, San Francisco, Seattle, San Diego, Portland
- Coverage: Pacific United States and Canada
British Summer Time (BST)
- UTC Offset: UTC+1 (UTC+0 during GMT)
- IANA Timezone: Europe/London
- Daylight Saving: Last Sunday in March to Last Sunday in October
- Major Cities: London, Manchester, Birmingham, Glasgow, Edinburgh
- Coverage: United Kingdom and Ireland
Quick Reference: PDT to BST
Remember: BST is 8 hours ahead of PDT during daylight saving time (March-November). When PST is active (November-March), PST is 8 hours behind GMT, making GMT 8 hours ahead.
Frequently Asked Questions
What is the time difference between PDT and BST?
Pacific Daylight Time (PDT) is UTC-7, while British Summer Time (BST) is UTC+1. This means BST is 8 hours ahead of PDT. When it's 8:00 AM in Los Angeles (PDT), it's 4:00 PM in London (BST). This 8-hour difference makes morning meetings in LA overlap with afternoon in the UK.
When do PDT and BST apply? Are the dates the same?
Both PDT and BST are active during daylight saving time, but with slightly different dates. PDT runs from the second Sunday in March to the first Sunday in November, while BST runs from the last Sunday in March to the last Sunday in October. This means there are brief periods where only one is active. During these transition periods, the time difference can vary by an hour.
What are the major cities and regions in PDT and BST?
PDT covers the US West Coast including major tech hubs like Los Angeles, San Francisco, Seattle, San Diego, and Portland, as well as British Columbia in Canada. BST covers the entire United Kingdom including London (the financial and political capital), Manchester, Birmingham, Glasgow, Edinburgh, and other major cities, plus Ireland.
What are the best times to schedule transatlantic calls?
The 8-hour difference creates limited overlap: early West Coast mornings (8-9 AM PDT) align with UK late afternoons (4-5 PM BST), while West Coast afternoons (2-4 PM PDT) align with UK evenings (10 PM-12 AM BST). The optimal window is 8-11 AM PDT (4-7 PM BST) when both regions can participate during reasonable business hours.
How does this differ from PST to GMT (winter times)?
During winter (November-March), PST (UTC-8) and GMT (UTC+0) are active, creating an 8-hour difference in the opposite direction. PST is 8 hours behind GMT. This consistency in the 8-hour gap makes annual scheduling predictable, though the exact times shift by one hour when transitions occur.
Which industries commonly use PDT to BST conversion?
Technology companies with offices in Silicon Valley and London dominate this conversion need. Financial services (investment banking, hedge funds, trading), legal firms, consulting companies, digital marketing agencies, creative studios, entertainment industry, and software development teams frequently coordinate across the PDT-BST divide for seamless 24/7 operations.
Pro Tips
- • BST is 8 hours ahead of PDT - a simple rule: add 8 hours to PDT to get BST time. If it goes past midnight, it becomes the next day.
- • The best meeting window for both coasts is 8 AM PDT (4 PM BST). West Coasters get early starts, and London gets normal end-of-day timing.
- • PDT and BST don't transition on the same dates. Mark your calendar for the brief periods (late October to early November, and late March) when transition timing differs.
- • For 24/7 operations, use the overlapping hours strategically: morning handoff from West Coast to UK afternoon, and UK evening handoff to West Coast morning.
- • London is a major financial hub with global markets opening early. Schedule critical market-facing decisions before 8 AM PDT (4 PM BST close).
- • Consider that UK employees may work a slightly earlier schedule (8 AM start) while West Coast tends toward 9 AM starts. Adjust meeting times accordingly for inclusion.
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