South Korea to SGT
-1hSouth Korea
KSTSOURCESGT
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.
Understanding the -1h Gap: South Korea vs SGT
South Korea runs on Korean Standard Time (KST) at UTC+09:00. SGT runs on Singapore Standard Time (SGT) at UTC+08:00. That puts South Korea 1 hour behind SGT — a difference of -1h at the current offsets.
In practice, when it is 9:00 AM in South Korea it is 8:00 AM in SGT. Midnight in South Korea is 11:00 PM in SGT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
South Korea to SGT time conversion table
| South Korea (KST) | SGT (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 South Korea to SGT time
- Scheduling a call from South Korea to SGT: a 10:00 AM start in South Korea lands at 9:00 AM in SGT, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both South Korea and SGT 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: South Korea viewers need 8:00 AM in SGT to catch a 9:00 AM start there, and 1:00 AM if the event is anchored to South Korea.
- 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 South Korea and need SGT 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 South Korea and SGT
Both South Korea and SGT 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
South Korea and SGT share 7 hours of working-hours overlap (10:00 AM–5:00 PM KST), so scheduling a live meeting is straightforward.
South Korea is 1 hour behind SGT (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 South Korea and SGT?
South Korea (KST, UTC+09:00) is 1 hour behind SGT (SGT, UTC+08:00). The gap is currently -1h.
How do I convert South Korea time to SGT time?
Add -1h to South Korea local time. For example, 9:00 AM in South Korea is 8:00 AM in SGT.
What time is it in SGT right now?
SGT 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 South Korea.
What is the best time to call SGT from South Korea?
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, South Korea or SGT?
South Korea is 1 hour behind SGT. When it is 12:00 PM in South Korea it is 11:00 AM in SGT.
Do South Korea and SGT use different time zones?
South Korea (South Korea) uses KST at UTC+09:00, while SGT uses SGT at UTC+08:00. The IANA identifiers are Asia/Seoul and Asia/Singapore.
Does daylight saving time affect the South Korea–SGT difference?
Neither zone observes daylight saving time, so the -1h offset between South Korea and SGT is fixed all year.
Which other cities share South Korea's time zone?
KST also covers Seoul, Busan, Incheon, Daegu, Daejeon, Pyongyang.
Which countries use KST, South Korea's zone?
KST is used in South Korea, North Korea.
Is there a day difference between South Korea and SGT?
Not normally. The -1h gap only pushes the date over the previous day.
What is the time difference between South Korea and SGT?
SGT is -1h from South Korea.
What timezone is South Korea in?
South Korea operates on its local timezone.
What timezone is SGT in?
SGT operates on its local timezone.
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 South Korea, what time is it in SGT?
When it is 12:00 AM (midnight) in South Korea (KST), it is -1h later in SGT (SGT).
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