PDT to UTC Converter
Convert time between Pacific Daylight Time (PDT) and Coordinated Universal Time (UTC)
Pacific Daylight Time (PDT)
Coordinated Universal Time (UTC)
Time Difference
Coordinated Universal Time (UTC) is 0 hours ahead of Pacific Daylight Time (PDT)
Select Date
Select Time
Quick Reference
| PDT | UTC |
|---|---|
| 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 UTC Time Conversion
Converting time from Pacific Daylight Time (PDT) to Coordinated Universal Time (UTC) is essential for US West Coast professionals coordinating with international colleagues and global teams. PDT is UTC-7, making UTC 7 hours ahead of PDT during the daylight saving time period (March to November).
This converter uses the IANA timezone database to ensure accurate calculations, intelligently handling the transition between Pacific Daylight Time (PDT) and Pacific Standard Time (PST). Whether you're managing international projects, coordinating with global markets, or scheduling international meetings, this tool provides reliable real-time conversions for seamless global coordination.
Common Use Cases for PDT to UTC Conversion
Business & Work
- Scheduling international business meetings from US West Coast
- Coordinating with global team members and remote workers
- Managing international software development and deployments
- Syncing with global financial markets and trading operations
Personal & Travel
- Planning international travel from Pacific region
- Coordinating with friends and family across the globe
- Attending international conferences and virtual events
- Tracking international sports events and live broadcasts
Time Zone Information
Pacific Daylight Time (PDT)
- UTC Offset: UTC-7
- 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
Coordinated Universal Time (UTC)
- UTC Offset: UTC+0
- IANA Timezone: UTC
- Daylight Saving: No daylight saving time - UTC is constant year-round
- Major Cities: Greenwich, London (in winter), Reykjavik, Dublin
- Coverage: Global standard time reference used worldwide
Quick Reference: PDT to UTC
Note: UTC is always 7 hours ahead of PDT (March - November). During standard time (November - March), PST is UTC-8, making UTC 8 hours ahead.