South Korea to Jakarta
-2hSouth Korea
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 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).
South Korea vs Jakarta: Offsets, DST and Best Call Times
South Korea runs on Korean Standard Time (KST) at UTC+09:00. Jakarta runs on Western Indonesia Time (WIB) at UTC+07:00. That puts South Korea 2 hours behind Jakarta — a difference of -2h at the current offsets.
In practice, when it is 9:00 AM in South Korea it is 7:00 AM in Jakarta. Midnight in South Korea is 10:00 PM in Jakarta. Neither zone observes daylight saving time, so the offset between them stays constant all year.
South Korea to Jakarta time conversion table
| South Korea (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 South Korea to Jakarta time
- Scheduling a call from South Korea to Jakarta: a 10:00 AM start in South Korea lands at 8:00 AM in Jakarta, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both South Korea 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.
- Booking travel or deliveries: tracking Jakarta local time against South Korea keeps pickup windows and arrival estimates honest across the -2h offset.
- 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 South Korea 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 South Korea and Jakarta
Both South Korea 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
South Korea and Jakarta share 6 hours of working-hours overlap (11:00 AM–5:00 PM KST), so scheduling a live meeting is straightforward.
South Korea 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 South Korea and Jakarta?
South Korea (KST, UTC+09:00) is 2 hours behind Jakarta (WIB, UTC+07:00). The gap is currently -2h.
How do I convert South Korea time to Jakarta time?
Add -2h to South Korea local time. For example, 9:00 AM in South Korea 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 South Korea.
What is the best time to call Jakarta from South Korea?
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, South Korea or Jakarta?
South Korea is 2 hours behind Jakarta. When it is 12:00 PM in South Korea it is 10:00 AM in Jakarta.
Do South Korea and Jakarta use different time zones?
South Korea (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 South Korea–Jakarta difference?
Neither zone observes daylight saving time, so the -2h offset between South Korea and Jakarta 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 Jakarta?
Not normally. The -2h gap only pushes the date over the previous day.
What is the time difference between South Korea and Jakarta?
Jakarta is -2h from South Korea.
What timezone is South Korea in?
South Korea operates on its local timezone.
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 Jakarta?
Standard business hours in Jakarta are 8:00 AM - 5:00 PM WIB.
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 South Korea, what time is it in Jakarta?
When it is 12:00 AM (midnight) in South Korea (KST), it is -2h later in Jakarta (WIB).
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