PDT to SGT Converter
Convert time between Pacific Daylight Time (PDT) and Singapore Standard Time (SGT)
Pacific Daylight Time (PDT)
Singapore Standard Time (SGT)
Time Difference
Singapore Standard Time (SGT) is 0 hours ahead of Pacific Daylight Time (PDT)
Select Date
Select Time
Quick Reference
| PDT | SGT |
|---|---|
| 19:00 | 10:00 |
| 21:00 | 12:00 |
| 23:00 | 14:00 |
| 01:00 | 16:00 |
| 03:00 | 18:00 |
| 05:00 | 20:00 |
| 07:00 | 22:00 |
| 09:00 | 00:00 |
| 11:00 | 02:00 |
| 13:00 | 04:00 |
| 15:00 | 06:00 |
| 17:00 | 08:00 |
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 PDT to SGT Time Conversion
Converting time between US Pacific Daylight Time (PDT) and Singapore Standard Time (SGT) is essential for coordinating with the US West Coast during the summer half-year. PDT is UTC-7, while SGT is UTC+8 year-round, placing Singapore 15 hours ahead of PDT from mid-March to early November. Outside PDT the region observes PST (UTC-8) and the gap grows to 16 hours.
This time zone converter uses the IANA timezone database to ensure accurate calculations and automatically handles the PST/PDT switch. Singapore never observes daylight saving, so the seasonal variation in the Pacific US-Singapore offset comes entirely from the American side. Whether you're scheduling San Francisco-Singapore business calls during US summer, planning travel, or coordinating with Singaporean partners from Los Angeles, Seattle or Vancouver, our converter provides reliable results.
Common Use Cases for PDT to SGT Conversion
Business & Work
- Scheduling summer meetings between San Francisco, Seattle or Los Angeles offices and Singapore
- Coordinating with Singapore partners from Silicon Valley tech firms during US daylight saving
- Planning conference calls with Singapore teams from the US West Coast while PDT is in effect
Personal & Travel
- Planning travel between the US West Coast and Singapore in the summer
- Coordinating with family and friends in Singapore
- Scheduling virtual events bridging the US West Coast and Asia
Time Zone Information
Pacific Daylight Time (PDT)
- UTC Offset: UTC-7
- IANA Timezone: America/Los_Angeles
- Daylight Saving: Active from second Sunday in March to first Sunday in November (reverts to PST UTC-8)
- Major Cities: Los Angeles, San Francisco, San Jose, San Diego, Seattle, Portland, Vancouver
- Coverage: US West Coast and western Canada during DST
Singapore Standard Time (SGT)
- UTC Offset: UTC+8
- IANA Timezone: Asia/Singapore
- Daylight Saving: No daylight saving time (consistent year-round)
- Major Cities: Singapore
- Coverage: Republic of Singapore
Quick Reference: PDT to SGT
Remember: SGT is 15 hours ahead of PDT. Outside US daylight saving (early November to mid-March), the US West Coast is on PST and the gap grows to 16 hours.
Frequently Asked Questions
What is the time difference between PDT and SGT?
Pacific Daylight Time (PDT) is UTC-7, while Singapore Standard Time (SGT) is UTC+8. SGT is 15 hours ahead of PDT. When it is 12:00 PM in Los Angeles, San Francisco or Seattle, it is 3:00 AM the next day in Singapore.
When does PDT apply?
PDT is the daylight saving time of the US Pacific zone, in effect from the second Sunday in March to the first Sunday in November. Outside that window the region is on PST (UTC-8) and Singapore is 16 hours ahead.
How does the time difference change throughout the year?
When the Pacific US switches back from PDT to PST in early November, the Singapore offset grows from 15 hours to 16 hours. Singapore never observes daylight saving, so the change is entirely on the US side.
What are the best times for PDT-SGT business calls?
Late evening in San Francisco (6:00 to 8:00 PM PDT) maps to Singapore morning (9:00 to 11:00 AM SGT the next day) — workable for early Singapore starters. For a Singapore afternoon meeting, schedule midnight to 2:00 AM PDT (3:00 to 5:00 PM SGT same day Singapore time).
Which countries or regions use SGT?
Singapore Standard Time is used only in the Republic of Singapore. Neighboring Malaysia uses the same UTC+8 offset under the name MYT, and Western Australia uses AWST also at UTC+8.
Which countries or regions use PDT?
PDT covers the US West Coast and western Canada during daylight saving, including California, Oregon, Washington and British Columbia. Major cities include Los Angeles, San Francisco, San Jose, San Diego, Seattle, Portland and Vancouver.
Pro Tips
- • SGT is 15 hours ahead of PDT — add 15 hours to Pacific US time and roll the date forward to get Singapore time.
- • Singapore never observes DST, so when PDT ends in November the offset jumps to 16 hours entirely on the US side.
- • Late evening in the Pacific US maps to mid-morning in Singapore the next day — workable for early Singapore starters.
- • Always include the date in cross-Pacific invites — Singapore is typically a full calendar day ahead of Pacific US.
- • For a daytime US meeting, the Singapore contact will be in late-night or pre-dawn hours.
- • Use IANA identifiers America/Los_Angeles and Asia/Singapore in calendars to handle the PST/PDT transitions automatically.