When it is 09:00 in Seoul it is 07:00 in Jakarta in January and 07:00 in July. Jakarta is 2 hours behind Seoul right now — and the difference is the same all year. This page gives the live times in both cities, the overlap between their working days, the daylight saving dates that move the difference, and the best meeting windows.
Try the tool: Time Zone Converter — convert any time between Seoul and Jakarta, with the offset for the date you pick.
Live times in Seoul and Jakarta
The two cities side by side. The January column uses the winter offsets (Seoul UTC+09:00, Jakarta UTC+07:00); the July column uses the summer offsets (Seoul UTC+09:00, Jakarta UTC+07:00).
| Time in Seoul | Jakarta in January | Jakarta in July |
|---|---|---|
| 00:00 | 22:00 | 22:00 |
| 06:00 | 04:00 | 04:00 |
| 09:00 | 07:00 | 07:00 |
| 12:00 | 10:00 | 10:00 |
| 15:00 | 13:00 | 13:00 |
| 17:00 | 15:00 | 15:00 |
| 21:00 | 19:00 | 19:00 |
The world clock shows the current time in both cities live, and the individual city pages — time in Seoul and time in Jakarta — explain each city's time zone, offsets and daylight saving in full.
The time difference between Seoul and Jakarta
The difference is constant: Jakarta is 2 hours behind Seoul on every day of the year. That is the simplest case in time-zone work — the answer does not depend on the date, and a meeting set for 09:00 in Seoul is always 07:00 in Jakarta. The reason the difference never changes is that neither city observes daylight saving.
To convert a time, add the difference: 09:00 in Seoul is 07:00 in Jakarta in January and 07:00 in July; 17:00 in Seoul — the end of the working day — is 15:00 in Jakarta in January and 15:00 in July. To go the other way, subtract it: 09:00 in Jakarta is 11:00 in Seoul in January. The time difference calculator does the arithmetic for any date, and the UTC to Jakarta page gives the full conversion table for Jakarta.
Meeting overlap between Seoul and Jakarta
The overlap is the hours when both cities are in their working day (09:00–17:00 local time). The table marks the overlapping hours in Seoul's working day and shows what time they are in Jakarta.
January
| Seoul time | Jakarta time | Both working? |
|---|---|---|
| 09:00 | 07:00 | Yes |
| 10:00 | 08:00 | Yes |
| 11:00 | 09:00 | Yes |
| 12:00 | 10:00 | Yes |
| 13:00 | 11:00 | Yes |
| 14:00 | 12:00 | Yes |
| 15:00 | 13:00 | Yes |
| 16:00 | 14:00 | Yes |
In January the overlap is 8 hours: 09:00, 10:00, 11:00, 12:00, 13:00, 14:00, 15:00, 16:00 Seoul time. In July it is 8 hours: 09:00, 10:00, 11:00, 12:00, 13:00, 14:00, 15:00, 16:00 Seoul time. The meeting planner finds the overlap for any two cities and any date, and the meeting time finder finds it for a whole team.
Daylight saving in Seoul and Jakarta
Seoul does not observe daylight saving, so its offset of UTC+09:00 never changes.
Jakarta does not observe daylight saving, so its offset of UTC+07:00 never changes.
The difference never changes, so there is no date on which a standing meeting moves. That does not mean the difference is the same as the difference with a third city — the difference between Seoul and London, for example, may still move when London changes its clocks. The individual DST pages — Seoul DST 2026 and Jakarta DST 2026 — give the exact dates for each city.
Best meeting windows
The best windows in January are 09:00–17:00 in Seoul (07:00–15:00 in Jakarta). These are the hours inside both working days, so nobody is up early or late. It is a short window, so keep the meeting short and send an agenda in advance.
Calling and travel notes
When it is 09:00 in Seoul it is 07:00 in Jakarta in January; when it is 12:00 in Seoul it is 10:00 in Jakarta; when it is 17:00 in Seoul it is 15:00 in Jakarta. The difference is under 12 hours, so the two cities are usually on the same date — but check the date for late-evening and early-morning times, when the date can differ by a day. Scheduling inside Asia is usually straightforward: most Asian countries do not observe daylight saving, so the difference between Seoul and Jakarta never changes. The working days overlap for most of the day, and the only thing to check is the date: when the difference is large enough, the two cities can be on different dates for part of the day.
Worked conversions
Six conversions, for January (offsets Seoul UTC+09:00, Jakarta UTC+07:00):
| Seoul | Jakarta |
|---|---|
| 08:00 | 06:00 |
| 09:00 | 07:00 |
| 12:00 | 10:00 |
| 14:00 | 12:00 |
| 17:00 | 15:00 |
| 20:00 | 18:00 |
In July, the answers are the same. For the reverse direction, see Jakarta to Seoul time.
Seoul and Jakarta at a glance
| Fact | Seoul | Jakarta |
|---|---|---|
| Country | South Korea | Indonesia |
| Region | Asia | Asia |
| IANA time zone | Asia/Seoul |
Asia/Jakarta |
| Standard offset | UTC+09:00 | UTC+07:00 |
| Daylight saving offset | — does not observe | — does not observe |
| Offset in January 2026 | UTC+09:00 | UTC+07:00 |
| Offset in July 2026 | UTC+09:00 | UTC+07:00 |
| Observes daylight saving | No | No |
The table is the whole pair in one place. The two numbers that matter most are the January and July offsets: if they are the same in both columns for a city, that city's offset never changes; if they differ, the city observes daylight saving and the difference between the cities moves with it. The individual city pages — time in Seoul and time in Jakarta — explain each city's time zone, and the DST pages — Seoul DST 2026 and Jakarta DST 2026 — give the exact change dates.
Frequently asked questions
What is the time difference between Seoul and Jakarta?
Jakarta is 2 hours behind Seoul right now. In January the difference is 2 hours behind and in July it is 2 hours behind — it is the same all year.
How do I schedule a recurring meeting between Seoul and Jakarta?
Pick a time inside the overlap — 09:00–17:00 Seoul time — and set the calendar event in UTC so it moves correctly when the clocks change. Re-check the overlap in March and October, when the difference moves, and rotate the time if the meeting falls outside someone's working day.
What time is it in Jakarta when it is 09:00 in Seoul?
It is 07:00 in January and 07:00 in July. The time zone converter gives the answer for any date.
What is the best time for a meeting between Seoul and Jakarta?
The best windows in January are 09:00–17:00 Seoul time — inside both working days.
Does the time difference between Seoul and Jakarta change during the year?
No. The difference is 2 hours behind all year, because neither city observes daylight saving.
What time is it in Seoul when it is 09:00 in Jakarta?
It is 11:00 in January and 11:00 in July. See Jakarta to Seoul time for the full comparison from Jakarta's side.
What are the time zones of Seoul and Jakarta?
Seoul is in Asia/Seoul (UTC+09:00 standard time) and Jakarta is in Asia/Jakarta (UTC+07:00 standard time).
What time is it in Seoul when it is midnight in Jakarta?
It is 02:00 in Seoul in January and 02:00 in July — the previous day, because Jakarta is ahead of Seoul. Midnight conversions are the ones that most often land on the wrong date, so always check the date as well as the time.
Sources
- IANA Time Zone Database, via Node.js Intl (
Intl.DateTimeFormatwithtimeZone) — offsets, daylight saving dates and local times in this article were worked out from the IANA database, not typed from memory. - TimeFlow's own time-zone data (
data/cities.ts,data/dst.ts), computed from the IANA database. - TimeFlow's time zone converter and meeting planner — the live tools behind the numbers on this page.
- Time-zone and daylight saving rules are set by governments and can change. For flights, deadlines and meetings that cannot move, confirm the time with an official source.