KST to Singapore
-1hKST
KSTSOURCESingapore
SGTGreen rows indicate typical business hours (9 AM - 5 PM)
KST and SGT on the World Map
The map below highlights the KST (Korea Standard Time) and SGT (Singapore Standard Time) timezone regions across the globe.
KST – Korea Standard Time
UTC+09:00Korea Standard Time (KST) is the time zone for South Korea, 9 hours ahead of UTC.
- •South Korea does not observe daylight saving time.
- •Seoul is home to Samsung, LG, and Hyundai headquarters.
- •KST is the same offset as JST (UTC+09:00).
SGT – Singapore Standard Time
UTC+08:00Singapore Standard Time (SGT) is the time zone for Singapore, 8 hours ahead of UTC.
- •Singapore uses UTC+08:00 despite being at about 104°E longitude (closer to UTC+07:00).
- •Singapore does not observe daylight saving time.
- •The Singapore Exchange (SGX) operates on SGT.
About Singapore
WikipediaSingapore Standard Time (SGT) is 8 hours ahead of GMT. As Asia's leading financial hub, Singapore bridges business hours between Europe and Australia.
The city-state has the world's highest percentage of millionaires, with 1 in 6 households.
KST vs Singapore: Offsets, DST and Best Call Times
KST runs on Korea Standard Time (KST) at UTC+09:00. Singapore runs on Singapore Standard Time (SGT) at UTC+08:00. That puts KST 1 hour behind Singapore — a difference of -1h at the current offsets.
In practice, when it is 9:00 AM in KST it is 8:00 AM in Singapore. Midnight in KST is 11:00 PM in Singapore. Neither zone observes daylight saving time, so the offset between them stays constant all year.
KST to Singapore time conversion table
| KST (KST) | Singapore (SGT) | Day |
|---|---|---|
| 12:00 AM | 11:00 PM | previous day |
| 6:00 AM | 5:00 AM | same day |
| 7:00 AM | 6:00 AM | same day |
| 8:00 AM | 7:00 AM | same day |
| 9:00 AM | 8:00 AM | same day |
| 12:00 PM | 11:00 AM | same day |
| 3:00 PM | 2:00 PM | same day |
| 5:00 PM | 4:00 PM | same day |
| 6:00 PM | 5:00 PM | same day |
| 9:00 PM | 8:00 PM | same day |
Why people convert KST to Singapore time
- Scheduling a call from KST to Singapore: a 10:00 AM start in KST lands at 9:00 AM in Singapore, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both KST and Singapore are inside the 9-to-5 working day between 10:00 AM and 5:00 PM KST time (9:00 AM–4:00 PM SGT). That is roughly 7 hours of usable overlap.
- Watching a live event or market open: KST viewers need 8:00 AM in Singapore to catch a 9:00 AM start there, and 1:00 AM if the event is anchored to KST.
- Always state the zone abbreviation, not just the hour. "3:00 PM KST" is unambiguous; "3 PM" across a -1h gap is not.
- Block 10:00 AM–5:00 PM KST as the recurring meeting window if you work primarily from KST and need Singapore colleagues present.
About KST (Korea Standard Time)
Korea Standard Time (KST) is the time zone used in South Korea. It shares the same UTC offset as Japan Standard Time but is a distinct time zone. South Korea does not observe daylight saving time. Seoul, the capital, is a major global tech and business hub.
About SGT (Singapore Standard Time)
Singapore Standard Time (SGT) is used in Singapore year-round. Singapore does not observe daylight saving time. Despite being geographically close to the UTC+07:00 zone, Singapore uses UTC+08:00 to align with major trading partners like China, Hong Kong, and Malaysia. Singapore is a major global financial hub.
Best time to call between KST and Singapore
Both KST and Singapore sit inside the 9 AM – 5 PM working day between 10:00 AM–5:00 PM KST, which is 9:00 AM–4:00 PM SGT. That gives roughly 7 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
KST and Singapore share 7 hours of working-hours overlap (10:00 AM–5:00 PM KST), so scheduling a live meeting is straightforward.
KST is 1 hour behind Singapore (KST UTC+09:00 → SGT UTC+08:00). The shared working window is 10:00 AM–5:00 PM KST. Remember to re-check around daylight-saving transitions.
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between KST and Singapore?
KST (KST, UTC+09:00) is 1 hour behind Singapore (SGT, UTC+08:00). The gap is currently -1h.
How do I convert KST time to Singapore time?
Add -1h to KST local time. For example, 9:00 AM in KST is 8:00 AM in Singapore.
What time is it in Singapore right now?
Singapore uses SGT at UTC+08:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -1h offset from KST.
What is the best time to call Singapore from KST?
Call between 10:00 AM and 5:00 PM KST — that maps to 9:00 AM–4:00 PM SGT and keeps both parties inside the working day.
Which is behind, KST or Singapore?
KST is 1 hour behind Singapore. When it is 12:00 PM in KST it is 11:00 AM in Singapore.
Do KST and Singapore use different time zones?
KST uses KST at UTC+09:00, while Singapore (Singapore) uses SGT at UTC+08:00. The IANA identifiers are Asia/Seoul and Asia/Singapore.
Does daylight saving time affect the KST–Singapore difference?
Neither zone observes daylight saving time, so the -1h offset between KST and Singapore is fixed all year.
Which other cities share KST's time zone?
KST also covers Seoul, Busan, Incheon, Daegu, Daejeon, Pyongyang.
Which countries use KST, KST's zone?
KST is used in South Korea, North Korea.
Is there a day difference between KST and Singapore?
Not normally. The -1h gap only pushes the date over the previous day.
What is the time difference between KST and Singapore?
Singapore is -1h from KST.
What timezone is KST in?
KST operates on its local timezone.
What timezone is Singapore in?
Singapore Standard Time (SGT) is 8 hours ahead of GMT. As Asia's leading financial hub, Singapore bridges business hours between Europe and Australia.
What are the business hours in Singapore?
Standard business hours in Singapore are 9:00 AM - 6:00 PM SGT.
Which countries use KST (Korea Standard Time)?
KST is used in South Korea, North Korea.
Does KST observe daylight saving time?
No, KST does not observe daylight saving time and remains at UTC+09:00 year-round.
What are some interesting facts about KST?
South Korea does not observe daylight saving time. Seoul is home to Samsung, LG, and Hyundai headquarters.
Which cities are in the SGT timezone?
Major cities in the SGT timezone include Singapore.
What is the UTC offset for SGT?
Singapore Standard Time (SGT) is at UTC+08:00.
What should I know about the SGT timezone?
Singapore uses UTC+08:00 despite being at about 104°E longitude (closer to UTC+07:00). Singapore does not observe daylight saving time.
When is it midnight in KST, what time is it in Singapore?
When it is 12:00 AM (midnight) in KST (KST), it is -1h later in Singapore (SGT).
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