PST to GST Converter
Convert time between Pacific Standard Time (PST) and Gulf Standard Time (GST)
Pacific Standard Time (PST)
Gulf Standard Time (GST)
Time Difference
Gulf Standard Time (GST) is 0 hours ahead of Pacific Standard Time (PST)
Select Date
Select Time
Quick Reference
| PST | GST |
|---|---|
| 19:00 | 06:00 |
| 21:00 | 08:00 |
| 23:00 | 10:00 |
| 01:00 | 12:00 |
| 03:00 | 14:00 |
| 05:00 | 16:00 |
| 07:00 | 18:00 |
| 09:00 | 20:00 |
| 11:00 | 22:00 |
| 13:00 | 00:00 |
| 15:00 | 02:00 |
| 17:00 | 04:00 |
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
About PST to GST Time Conversion
Converting time between Pacific Standard Time (PST) and Gulf Standard Time (GST) involves a 12-hour difference. PST is UTC-8, while GST is UTC+4, making GST always 12 hours ahead of PST during US winter months. At exactly 12 hours apart, PST and GST sit on opposite sides of the clock.
This time zone converter uses the IANA timezone database for accurate calculations. PST applies from November to March on the US West Coast, while GST is observed year-round. During US summer, the West Coast switches to PDT (UTC-7), reducing the gap to 11 hours.
Common Use Cases for PST to GST Conversion
Business & Work
- Scheduling winter meetings between Los Angeles or Seattle offices and Dubai teams
- Coordinating US West Coast-Gulf technology and investment partnerships during winter
- Planning asynchronous workflows given the 12-hour mirror-image offset
Personal & Travel
- Planning winter travel between the US West Coast and the UAE
- Coordinating with family and friends in the Gulf from California or Washington State
- Finding the narrow live overlap window across the 12-hour gap
Time Zone Information
Pacific Standard Time (PST)
- UTC Offset: UTC-8 (UTC-7 during PDT)
- IANA Timezone: America/Los_Angeles
- Daylight Saving: Second Sunday in March to First Sunday in November (PDT, UTC-7)
- Major Cities: Los Angeles, San Francisco, Seattle, Portland, San Diego
- Coverage: US West Coast during standard time (winter months)
Gulf Standard Time (GST)
- UTC Offset: UTC+4 (no daylight saving time)
- IANA Timezone: Asia/Dubai
- Daylight Saving: None — GST is observed year-round
- Major Cities: Dubai, Abu Dhabi, Sharjah, Muscat, Fujairah
- Coverage: United Arab Emirates and Oman
Quick Reference: PST to GST
Remember: GST is always 12 hours ahead of PST (11 hours ahead when the West Coast is on PDT in summer)
Frequently Asked Questions
What is the time difference between PST and GST?
Pacific Standard Time (PST) is UTC-8, while Gulf Standard Time (GST) is UTC+4. GST is 12 hours ahead of PST. When it's 9:00 AM in Los Angeles (PST), it's 9:00 PM in Dubai (GST) — exactly 12 hours apart.
When does the PST to GST conversion apply?
PST is observed on the US West Coast from the first Sunday in November to the second Sunday in March. During summer, the West Coast uses PDT (UTC-7), reducing the gap to 11 hours ahead of GST.
Does the time difference change throughout the year?
Yes. During US winter (November–March), the gap is 12 hours (PST vs GST). During summer (March–November), the West Coast moves to PDT (UTC-7) and the gap becomes 11 hours. The UAE never observes daylight saving time.
What are the best times for PST-GST business calls?
At exactly 12 hours apart, PST and GST are mirror images of each other. The best window is 6:00–8:00 AM PST (6:00–8:00 PM GST), catching Los Angeles at the start of the day and Dubai at the end of its business day.
Which countries use Gulf Standard Time (GST)?
GST (UTC+4) is used year-round by the United Arab Emirates and Oman. Major cities include Dubai, Abu Dhabi, Sharjah, and Muscat. GST never observes daylight saving time.
Which regions use Pacific Standard Time (PST)?
PST (UTC-8) is observed during winter months by California, Oregon, Washington State, and Nevada. Major cities include Los Angeles, San Francisco, Seattle, Portland, and San Diego.
Pro Tips
- • GST is exactly 12 hours ahead of PST — PST and GST are mirror images of the clock.
- • In US summer (PDT), the gap drops to 11 hours — confirm whether PST or PDT is active.
- • Best meeting window: 6–8 AM PST (6–8 PM GST) — early LA morning meets late Dubai afternoon.
- • The UAE never observes DST — GST stays fixed at UTC+4, so only the West Coast side shifts.
- • The 12-hour mirror offset means AM on the West Coast is PM in Dubai and vice versa — easy to remember.
- • For recurring winter calls, the clean 12-hour offset makes mental conversion straightforward: flip AM/PM.