SGT to KST Converter
Convert time between Singapore Standard Time (SGT) and Korea Standard Time (KST)
Singapore Standard Time (SGT)
Korea Standard Time (KST)
Time Difference
Korea Standard Time (KST) is 0 hours ahead of Singapore Standard Time (SGT)
Select Date
Select Time
Quick Reference
| SGT | KST |
|---|---|
| 10:00 | 11:00 |
| 12:00 | 13:00 |
| 14:00 | 15:00 |
| 16:00 | 17:00 |
| 18:00 | 19:00 |
| 20:00 | 21:00 |
| 22:00 | 23:00 |
| 00:00 | 01:00 |
| 02:00 | 03:00 |
| 04:00 | 05:00 |
| 06:00 | 07:00 |
| 08:00 | 09:00 |
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 SGT to KST Time Conversion
Converting time between Singapore Standard Time (SGT) and Korea Standard Time (KST) is a daily requirement for east-Asian business connections. SGT is UTC+8 year-round, while KST is UTC+9, putting South Korea 1 hour ahead of Singapore. Neither side observes daylight saving, so the 1-hour offset is constant 365 days a year — one of the simplest cross-Asia conversions.
This time zone converter uses the IANA timezone database to ensure accurate calculations. South Korea has used KST exclusively since 1961 and the country spans only a single timezone. Whether you're scheduling Singapore-Seoul business meetings, planning travel through East Asia, or coordinating with partners in Busan or Incheon, our converter provides reliable results.
Common Use Cases for SGT to KST Conversion
Business & Work
- Scheduling meetings between Singapore and Seoul, Busan or Incheon offices
- Coordinating semiconductor, electronics and shipping partners between Singapore and Korea
- Planning conference calls bridging Southeast Asia and Korea in near-real-time
Personal & Travel
- Planning travel between Singapore and South Korea
- Coordinating with family and friends in Seoul, Busan, Incheon or Daegu
- Scheduling virtual events spanning Southeast and Northeast Asia
Time Zone Information
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
Korea Standard Time (KST)
- UTC Offset: UTC+9
- IANA Timezone: Asia/Seoul
- Daylight Saving: No daylight saving time (South Korea last observed DST in 1988)
- Major Cities: Seoul, Busan, Incheon, Daegu, Daejeon, Gwangju, Suwon, Ulsan
- Coverage: Republic of Korea (single nationwide timezone)
Quick Reference: SGT to KST
Remember: KST is 1 hour ahead of SGT, all year. Neither zone observes daylight saving so the offset never changes.
Frequently Asked Questions
What is the time difference between SGT and KST?
Singapore Standard Time (SGT) is UTC+8, while Korea Standard Time (KST) is UTC+9. KST is exactly 1 hour ahead of SGT. When it is 12:00 PM in Singapore, it is 1:00 PM the same day in Seoul or Busan.
When does this SGT to KST conversion apply?
All year round. Neither Singapore nor South Korea observes daylight saving, so the 1-hour offset is constant 12 months a year — one of the simplest cross-Asia conversions to plan around.
Does South Korea observe daylight saving time?
No. South Korea last observed DST in 1988 around the Seoul Olympics. Since then KST (UTC+9) has been used year-round nationwide.
What are the best times for SGT-KST business calls?
The 1-hour offset means business hours align almost perfectly. Singapore mid-morning (9:00 AM to 12:00 PM SGT) maps to Korea late-morning (10:00 AM to 1:00 PM KST). Any time during the working day in Singapore is also a working hour in Korea.
Which countries or regions use KST?
Korea Standard Time is used across the entire Republic of Korea year-round. Major cities include Seoul, Busan, Incheon, Daegu, Daejeon, Gwangju, Suwon and Ulsan. UTC+9 is also used by Japan (JST), parts of Indonesia (WIT), Palau and East Timor.
Which countries or regions use SGT?
Singapore Standard Time is used only in the Republic of Singapore. UTC+8 is shared with Malaysia, Western Australia, Hong Kong, the Philippines and most of mainland China.
Pro Tips
- • KST is exactly 1 hour ahead of SGT, all year. Add 1 hour to Singapore time to get Seoul time.
- • Neither zone observes DST, so the offset is fixed and predictable across recurring calendars.
- • Business hours overlap is excellent — almost any working hour in Singapore is also a working hour in Korea.
- • For Korean end-of-day calls, late Singapore afternoon (5:00 to 8:00 PM SGT) reaches 6:00 to 9:00 PM KST.
- • Korean office culture often runs into the evening — 6:00 to 8:00 PM KST is still a common meeting window.
- • Use IANA identifier Asia/Seoul in calendars — KST does not observe DST so the offset is locked.