JST to EEST
-6hJST
JSTSOURCEEEST
EESTGreen rows indicate typical business hours (9 AM - 5 PM)
JST and EEST on the World Map
The map below highlights the JST (Japan Standard Time) and EEST (Eastern European Summer Time) timezone regions across the globe.
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.
EEST – Eastern European Summer Time
UTC+03:00Eastern European Summer Time (EEST, UTC+03:00) is the daylight saving period across eastern Europe, from late March to late October.
- •EEST runs from the last Sunday in March to the last Sunday in October.
- •EEST is one hour ahead of Eastern European Time (EET, UTC+02:00).
- •During EEST, eastern Europe is level with Moscow, Istanbul and Riyadh.
- •EEST follows the EU-wide summer time schedule.
Understanding the -6h Gap: JST vs EEST
JST runs on Japan Standard Time (JST) at UTC+09:00. EEST runs on Eastern European Summer Time (EEST) at UTC+03:00. That puts JST 6 hours behind EEST — a difference of -6h at the current offsets.
In practice, when it is 9:00 AM in JST it is 3:00 AM in EEST. Midnight in JST is 6:00 PM in EEST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
JST to EEST time conversion table
| JST (JST) | EEST (EEST) | Day |
|---|---|---|
| 12:00 AM | 6:00 PM | previous day |
| 6:00 AM | 12:00 AM | same day |
| 7:00 AM | 1:00 AM | same day |
| 8:00 AM | 2:00 AM | same day |
| 9:00 AM | 3:00 AM | same day |
| 12:00 PM | 6:00 AM | same day |
| 3:00 PM | 9:00 AM | same day |
| 5:00 PM | 11:00 AM | same day |
| 6:00 PM | 12:00 PM | same day |
| 9:00 PM | 3:00 PM | same day |
Why people convert JST to EEST time
- Scheduling a call from JST to EEST: a 10:00 AM start in JST lands at 4:00 AM in EEST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both JST and EEST are inside the 9-to-5 working day between 3:00 PM and 5:00 PM JST time (9:00 AM–11:00 AM EEST). That is roughly 2 hours of usable overlap.
- Booking travel or deliveries: tracking EEST local time against JST keeps pickup windows and arrival estimates honest across the -6h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM JST" is unambiguous; "3 PM" across a -6h gap is not.
- Block 3:00 PM–5:00 PM JST as the recurring meeting window if you work primarily from JST and need EEST colleagues present.
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.
About EEST (Eastern European Summer Time)
Eastern European Summer Time (EEST) is the daylight saving period used across eastern Europe, when clocks move one hour forward from Eastern European Time (EET, UTC+02:00) to UTC+03:00. It runs from the last Sunday in March to the last Sunday in October, in step with the rest of the European Union. EEST covers Greece, Finland, Romania, Bulgaria, the Baltic states, Ukraine and Moldova, and matches the offset used year-round by Moscow, Istanbul and Riyadh during those months. Athens and Helsinki both sit near the western edge of the EEST band, so summer evenings stay light well past 21:00.
Best time to call between JST and EEST
Both JST and EEST sit inside the 9 AM – 5 PM working day between 3:00 PM–5:00 PM JST, which is 9:00 AM–11:00 AM EEST. That gives roughly 2 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
JST and EEST overlap for about 2 hours during the working day — enough for meetings if you avoid the edges of the window.
JST is 6 hours behind EEST (JST UTC+09:00 → EEST UTC+03:00). The shared working window is 3:00 PM–5:00 PM JST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
JST
Does not observe DST
EEST
☀ Currently in DST
Standard: UTC+02:00 · DST: UTC+03:00
Clocks fall back on Sun, Oct 25, 2026
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 JST and EEST?
JST (JST, UTC+09:00) is 6 hours behind EEST (EEST, UTC+03:00). The gap is currently -6h.
How do I convert JST time to EEST time?
Add -6h to JST local time. For example, 9:00 AM in JST is 3:00 AM in EEST.
What time is it in EEST right now?
EEST uses EEST at UTC+03:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -6h offset from JST.
What is the best time to call EEST from JST?
Call between 3:00 PM and 5:00 PM JST — that maps to 9:00 AM–11:00 AM EEST and keeps both parties inside the working day.
Which is behind, JST or EEST?
JST is 6 hours behind EEST. When it is 12:00 PM in JST it is 6:00 AM in EEST.
Does daylight saving time affect the JST–EEST difference?
Neither zone observes daylight saving time, so the -6h offset between JST and EEST is fixed all year.
Which other cities share JST's time zone?
JST also covers Tokyo, Osaka, Yokohama, Nagoya, Sapporo, Kyoto, Kobe, Fukuoka and 1 more.
Which countries use JST, JST's zone?
JST is used in Japan.
Is there a day difference between JST and EEST?
Not normally. The -6h gap only pushes the date over the previous day.
What is the time difference between JST and EEST?
EEST is -6h from JST.
What timezone is JST in?
JST operates on its local timezone.
What timezone is EEST in?
EEST operates on its local timezone.
Which countries use JST (Japan Standard Time)?
JST is used in Japan.
Does JST observe daylight saving time?
No, JST does not observe daylight saving time and remains at UTC+09:00 year-round.
What are some interesting facts about JST?
Japan does not observe daylight saving time. Tokyo is the most populous metropolitan area in the world.
Which cities are in the EEST timezone?
Major cities in the EEST timezone include Athens, Helsinki, Bucharest, Sofia, Kyiv, Riga.
What is the UTC offset for EEST?
Eastern European Summer Time (EEST) is at UTC+03:00. During daylight saving time, it shifts to EEST.
What should I know about the EEST timezone?
EEST runs from the last Sunday in March to the last Sunday in October. EEST is one hour ahead of Eastern European Time (EET, UTC+02:00).
When is it midnight in JST, what time is it in EEST?
When it is 12:00 AM (midnight) in JST (JST), it is -6h later in EEST (EEST).
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