Seoul to Jakarta
-2hSeoul
KSTSOURCEJakarta
WIBGreen rows indicate typical business hours (9 AM - 5 PM)
KST and WIB on the World Map
The map below highlights the KST (Korea Standard Time) and WIB (Western Indonesia 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).
WIB – Western Indonesia Time
UTC+07:00Western Indonesia Time (WIB, UTC+07:00) covers Java, Sumatra and West Kalimantan, including Jakarta.
- •Indonesia spans three time zones: WIB (UTC+07:00), WITA (UTC+08:00) and WIT (UTC+09:00).
- •Indonesia has not observed daylight saving time since 1964.
- •Jakarta is the largest city in Southeast Asia by population.
- •WIB shares the UTC+07:00 offset with Indochina Time.
About Seoul
WikipediaSeoul operates on Korea Standard Time (KST), UTC+9, same as Japan. As a global tech and entertainment hub, Seoul coordinates with East Asian markets.
Seoul has the fastest average internet speed in the world.
About Jakarta
WikipediaJakarta operates on Western Indonesia Time (WIB), UTC+7. As Southeast Asia's largest economy, Jakarta's IDX is a key emerging market exchange.
Indonesia has 3 time zones; Jakarta uses Western Indonesia Time (WIB).
Time Conversion Guide: Seoul to Jakarta
Seoul runs on Korean Standard Time (KST) at UTC+09:00. Jakarta runs on Western Indonesia Time (WIB) at UTC+07:00. That puts Seoul 2 hours behind Jakarta — a difference of -2h at the current offsets.
In practice, when it is 9:00 AM in Seoul it is 7:00 AM in Jakarta. Midnight in Seoul is 10:00 PM in Jakarta. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Seoul to Jakarta time conversion table
| Seoul (KST) | Jakarta (WIB) | Day |
|---|---|---|
| 12:00 AM | 10:00 PM | previous day |
| 6:00 AM | 4:00 AM | same day |
| 7:00 AM | 5:00 AM | same day |
| 8:00 AM | 6:00 AM | same day |
| 9:00 AM | 7:00 AM | same day |
| 12:00 PM | 10:00 AM | same day |
| 3:00 PM | 1:00 PM | same day |
| 5:00 PM | 3:00 PM | same day |
| 6:00 PM | 4:00 PM | same day |
| 9:00 PM | 7:00 PM | same day |
Why people convert Seoul to Jakarta time
- Scheduling a call from Seoul to Jakarta: a 10:00 AM start in Seoul lands at 8:00 AM in Jakarta, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Seoul and Jakarta are inside the 9-to-5 working day between 11:00 AM and 5:00 PM KST time (9:00 AM–3:00 PM WIB). That is roughly 6 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in Seoul is 6:00 PM in Jakarta makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM KST" is unambiguous; "3 PM" across a -2h gap is not.
- Block 11:00 AM–5:00 PM KST as the recurring meeting window if you work primarily from Seoul and need Jakarta 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 WIB (Western Indonesia Time)
Western Indonesia Time (WIB, Waktu Indonesia Barat) is one of Indonesia's three time zones, fixed at UTC+07:00 all year. It covers Java, Sumatra, West Kalimantan and the provinces around them — home to Jakarta, the country's capital and largest city, plus Surabaya and Bandung. Indonesia does not observe daylight saving time, so WIB never shifts. WIB shares its UTC+07:00 offset with Indochina Time (ICT) and Christmas Island Time, but is a distinct zone covering the western half of the Indonesian archipelago. The country's other zones are WITA (UTC+08:00) in the centre and WIT (UTC+09:00) in the east.
Best time to call between Seoul and Jakarta
Both Seoul and Jakarta sit inside the 9 AM – 5 PM working day between 11:00 AM–5:00 PM KST, which is 9:00 AM–3:00 PM WIB. That gives roughly 6 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Seoul and Jakarta share 6 hours of working-hours overlap (11:00 AM–5:00 PM KST), so scheduling a live meeting is straightforward.
Seoul is 2 hours behind Jakarta (KST UTC+09:00 → WIB UTC+07:00). The shared working window is 11:00 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 Seoul and Jakarta?
Seoul (KST, UTC+09:00) is 2 hours behind Jakarta (WIB, UTC+07:00). The gap is currently -2h.
How do I convert Seoul time to Jakarta time?
Add -2h to Seoul local time. For example, 9:00 AM in Seoul is 7:00 AM in Jakarta.
What time is it in Jakarta right now?
Jakarta uses WIB at UTC+07:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -2h offset from Seoul.
What is the best time to call Jakarta from Seoul?
Call between 11:00 AM and 5:00 PM KST — that maps to 9:00 AM–3:00 PM WIB and keeps both parties inside the working day.
Which is behind, Seoul or Jakarta?
Seoul is 2 hours behind Jakarta. When it is 12:00 PM in Seoul it is 10:00 AM in Jakarta.
Do Seoul and Jakarta use different time zones?
Seoul (South Korea) uses KST at UTC+09:00, while Jakarta (Indonesia) uses WIB at UTC+07:00. The IANA identifiers are Asia/Seoul and Asia/Jakarta.
Does daylight saving time affect the Seoul–Jakarta difference?
Neither zone observes daylight saving time, so the -2h offset between Seoul and Jakarta is fixed all year.
Which other cities share Seoul's time zone?
KST also covers Seoul, Busan, Incheon, Daegu, Daejeon, Pyongyang.
Which countries use KST, Seoul's zone?
KST is used in South Korea, North Korea.
Is there a day difference between Seoul and Jakarta?
Not normally. The -2h gap only pushes the date over the previous day.
What is the time difference between Seoul and Jakarta?
Jakarta is -2h from Seoul.
What timezone is Seoul in?
Seoul operates on Korea Standard Time (KST), UTC+9, same as Japan. As a global tech and entertainment hub, Seoul coordinates with East Asian markets.
What timezone is Jakarta in?
Jakarta operates on Western Indonesia Time (WIB), UTC+7. As Southeast Asia's largest economy, Jakarta's IDX is a key emerging market exchange.
What are the business hours in Seoul?
Standard business hours in Seoul are 9:00 AM - 6:00 PM KST.
What are the business hours in Jakarta?
Standard business hours in Jakarta are 8:00 AM - 5:00 PM WIB.
What is the best time to schedule a call between Seoul and Jakarta?
The best overlap for a call is when both cities are in business hours. Seoul works 9:00 AM - 6:00 PM KST and Jakarta works 8:00 AM - 5:00 PM WIB (-2h difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Seoul and Jakarta?
Seoul uses KRW (₩) while Jakarta uses IDR (Rp). Check current exchange rates when planning travel or business between these cities.
How do Seoul and Jakarta compare in size?
Seoul has a population of approximately 9.7 million (metro: 25.5 million), while Jakarta has approximately 10.5 million (metro: 34.5 million).
What are the major landmarks in Seoul and Jakarta?
Seoul is known for Gyeongbokgung Palace, N Seoul Tower, Bukchon Hanok Village. Jakarta is famous for Monas, Istiqlal Mosque, Old Town (Kota Tua).
Do Seoul and Jakarta have stock exchanges?
Yes. Seoul has the KRX (Korea Exchange) and Jakarta has the IDX (Indonesia Stock Exchange). The -2h time difference affects trading hour overlaps between these exchanges.
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 WIB timezone?
Major cities in the WIB timezone include Jakarta, Surabaya, Bandung, Medan, Palembang.
What is the UTC offset for WIB?
Western Indonesia Time (WIB) is at UTC+07:00.
What should I know about the WIB timezone?
Indonesia spans three time zones: WIB (UTC+07:00), WITA (UTC+08:00) and WIT (UTC+09:00). Indonesia has not observed daylight saving time since 1964.
When is it midnight in Seoul, what time is it in Jakarta?
When it is 12:00 AM (midnight) in Seoul (KST), it is -2h later in Jakarta (WIB).
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