Jakarta to Japan
+2hJakarta
WIBSOURCEJapan
JSTGreen rows indicate typical business hours (9 AM - 5 PM)
WIB and JST on the World Map
The map below highlights the WIB (Western Indonesia Time) and JST (Japan Standard Time) timezone regions across the globe.
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.
JST – Japan Standard Time
UTC+09:00Japan Standard Time (JST) is the time zone for Japan, 9 hours ahead of UTC.
- •Japan does not observe daylight saving time.
- •Tokyo is the most populous metropolitan area in the world.
- •The Tokyo Stock Exchange operates from 9:00 AM to 3:00 PM JST.
- •JST is 14 hours ahead of EST and 9 hours ahead of GMT.
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).
Jakarta vs Japan: Offsets, DST and Best Call Times
Jakarta runs on Western Indonesia Time (WIB) at UTC+07:00. Japan runs on Japan Standard Time (JST) at UTC+09:00. That puts Jakarta 2 hours ahead of Japan — a difference of +2h at the current offsets.
In practice, when it is 9:00 AM in Jakarta it is 11:00 AM in Japan. Midnight in Jakarta is 2:00 AM in Japan. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Jakarta to Japan time conversion table
| Jakarta (WIB) | Japan (JST) | Day |
|---|---|---|
| 12:00 AM | 2:00 AM | same day |
| 6:00 AM | 8:00 AM | same day |
| 7:00 AM | 9:00 AM | same day |
| 8:00 AM | 10:00 AM | same day |
| 9:00 AM | 11:00 AM | same day |
| 12:00 PM | 2:00 PM | same day |
| 3:00 PM | 5:00 PM | same day |
| 5:00 PM | 7:00 PM | same day |
| 6:00 PM | 8:00 PM | same day |
| 9:00 PM | 11:00 PM | same day |
Why people convert Jakarta to Japan time
- Scheduling a call from Jakarta to Japan: a 10:00 AM start in Jakarta lands at 12:00 PM in Japan, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Jakarta and Japan are inside the 9-to-5 working day between 9:00 AM and 3:00 PM WIB time (11:00 AM–5:00 PM JST). That is roughly 6 hours of usable overlap.
- Coordinating a Jakarta-based team with Japan contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM WIB" is unambiguous; "3 PM" across a +2h gap is not.
- Block 9:00 AM–3:00 PM WIB as the recurring meeting window if you work primarily from Jakarta and need Japan colleagues present.
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.
About JST (Japan Standard Time)
Japan Standard Time (JST) is the standard time zone for all of Japan. Japan does not observe daylight saving time. JST is 9 hours ahead of UTC and 14 hours ahead of EST. The Tokyo Stock Exchange, the world's third largest by market capitalization, operates on JST. South Korea uses the same offset (KST) but it is a distinct time zone.
Best time to call between Jakarta and Japan
Both Jakarta and Japan sit inside the 9 AM – 5 PM working day between 9:00 AM–3:00 PM WIB, which is 11:00 AM–5:00 PM JST. That gives roughly 6 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Jakarta and Japan share 6 hours of working-hours overlap (9:00 AM–3:00 PM WIB), so scheduling a live meeting is straightforward.
Jakarta is 2 hours ahead of Japan (WIB UTC+07:00 → JST UTC+09:00). The shared working window is 9:00 AM–3:00 PM WIB. 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 Jakarta and Japan?
Jakarta (WIB, UTC+07:00) is 2 hours ahead of Japan (JST, UTC+09:00). The gap is currently +2h.
How do I convert Jakarta time to Japan time?
Add +2h to Jakarta local time. For example, 9:00 AM in Jakarta is 11:00 AM in Japan.
What time is it in Japan right now?
Japan uses JST at UTC+09:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +2h offset from Jakarta.
What is the best time to call Japan from Jakarta?
Call between 9:00 AM and 3:00 PM WIB — that maps to 11:00 AM–5:00 PM JST and keeps both parties inside the working day.
Which is ahead, Jakarta or Japan?
Jakarta is 2 hours ahead of Japan. When it is 12:00 PM in Jakarta it is 2:00 PM in Japan.
Do Jakarta and Japan use different time zones?
Jakarta (Indonesia) uses WIB at UTC+07:00, while Japan (Japan) uses JST at UTC+09:00. The IANA identifiers are Asia/Jakarta and Asia/Tokyo.
Does daylight saving time affect the Jakarta–Japan difference?
Neither zone observes daylight saving time, so the +2h offset between Jakarta and Japan is fixed all year.
Which other cities share Jakarta's time zone?
WIB also covers Jakarta, Surabaya, Bandung, Medan, Palembang.
Which countries use WIB, Jakarta's zone?
WIB is used in Indonesia (Java, Sumatra, West Kalimantan).
Is there a day difference between Jakarta and Japan?
Not normally. The +2h gap only pushes the date over for late-evening times.
What is the time difference between Jakarta and Japan?
Japan is +2h from Jakarta.
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 timezone is Japan in?
Japan operates on its local timezone.
What are the business hours in Jakarta?
Standard business hours in Jakarta are 8:00 AM - 5:00 PM WIB.
Which countries use WIB (Western Indonesia Time)?
WIB is used in Indonesia (Java, Sumatra, West Kalimantan).
Does WIB observe daylight saving time?
No, WIB does not observe daylight saving time and remains at UTC+07:00 year-round.
What are some interesting facts about WIB?
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.
Which cities are in the JST timezone?
Major cities in the JST timezone include Tokyo, Osaka, Yokohama, Nagoya, Sapporo, Kyoto, Kobe, Fukuoka.
What is the UTC offset for JST?
Japan Standard Time (JST) is at UTC+09:00.
What should I know about the JST timezone?
Japan does not observe daylight saving time. Tokyo is the most populous metropolitan area in the world.
When is it midnight in Jakarta, what time is it in Japan?
When it is 12:00 AM (midnight) in Jakarta (WIB), it is +2h later in Japan (JST).
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