JST to Prague
-7hJST
JSTSOURCEPrague
CESTGreen rows indicate typical business hours (9 AM - 5 PM)
JST and CEST on the World Map
The map below highlights the JST (Japan Standard Time) and CEST (Central European 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.
CET – Central European Time
UTC+01:00Central European Time (CET) is used across most of Western and Central Europe, 1 hour ahead of UTC.
- •CET covers more European countries than any other time zone.
- •Spain uses CET despite being geographically aligned with GMT/WET.
- •The Frankfurt Stock Exchange, Euronext (Amsterdam/Paris), and Borsa Italiana operate on CET.
- •Over 500 million people live in the CET time zone.
- •France moved to CET during the German occupation in WWII and never switched back.
About Prague
WikipediaPrague operates on Central European Time (CET/CEST). As Central Europe's tourism and tech hub, Prague coordinates with major EU markets.
Czechia has the highest beer consumption per capita in the world.
Comparing Time Zones: JST and Prague
JST runs on Japan Standard Time (JST) at UTC+09:00. Prague runs on Central European Summer Time (CEST) at UTC+02:00, also currently on daylight saving time. That puts JST 7 hours behind Prague — a difference of -7h at the current offsets.
In practice, when it is 9:00 AM in JST it is 2:00 AM in Prague. Midnight in JST is 5:00 PM in Prague.Prague observes daylight saving time while JST does not, so the gap narrows or widens by an hour part of the year.
JST to Prague time conversion table
| JST (JST) | Prague (CEST) | Day |
|---|---|---|
| 12:00 AM | 5:00 PM | previous day |
| 6:00 AM | 11:00 PM | previous day |
| 7:00 AM | 12:00 AM | same day |
| 8:00 AM | 1:00 AM | same day |
| 9:00 AM | 2:00 AM | same day |
| 12:00 PM | 5:00 AM | same day |
| 3:00 PM | 8:00 AM | same day |
| 5:00 PM | 10:00 AM | same day |
| 6:00 PM | 11:00 AM | same day |
| 9:00 PM | 2:00 PM | same day |
Why people convert JST to Prague time
- Scheduling a call from JST to Prague: a 10:00 AM start in JST lands at 3:00 AM in Prague, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both JST and Prague are inside the 9-to-5 working day between 4:00 PM and 5:00 PM JST time (9:00 AM–10:00 AM CEST). That is roughly 1 hours of usable overlap.
- Booking travel or deliveries: tracking Prague local time against JST keeps pickup windows and arrival estimates honest across the -7h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM JST" is unambiguous; "3 PM" across a -7h gap is not.
- Block 4:00 PM–5:00 PM JST as the recurring meeting window if you work primarily from JST and need Prague colleagues present.
- Prague: Clocks fall back on Sun, Oct 25, 2026. Any meeting series spanning that date will shift by an hour in local time.
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 CET (Central European Time)
Central European Time (CET) is the standard time zone for most of Europe, covering over 30 countries from Spain to Poland, and from Norway to Italy. CET is 1 hour ahead of GMT and is used by the European Union's most populous nations. During summer, most CET countries switch to Central European Summer Time (CEST, UTC+02:00). Major European financial markets in Frankfurt, Paris, and Amsterdam operate on CET.
Best time to call between JST and Prague
Both JST and Prague sit inside the 9 AM – 5 PM working day between 4:00 PM–5:00 PM JST, which is 9:00 AM–10:00 AM CEST. That gives roughly 1 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
JST and Prague overlap for only 60 minutes (4:00 PM–5:00 PM JST), so meetings have to be booked precisely.
JST is 7 hours behind Prague (JST UTC+09:00 → CEST UTC+02:00). The shared working window is 4:00 PM–5:00 PM JST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
JST
Does not observe DST
Prague
☀ Currently in DST
Standard: UTC+01:00 · DST: UTC+02:00
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 Prague?
JST (JST, UTC+09:00) is 7 hours behind Prague (CEST, UTC+02:00). The gap is currently -7h.
How do I convert JST time to Prague time?
Add -7h to JST local time. For example, 9:00 AM in JST is 2:00 AM in Prague.
What time is it in Prague right now?
Prague uses CEST at UTC+02:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -7h offset from JST.
What is the best time to call Prague from JST?
Call between 4:00 PM and 5:00 PM JST — that maps to 9:00 AM–10:00 AM CEST and keeps both parties inside the working day.
Which is behind, JST or Prague?
JST is 7 hours behind Prague. When it is 12:00 PM in JST it is 5:00 AM in Prague.
Do JST and Prague use different time zones?
JST uses JST at UTC+09:00, while Prague (Czechia) uses CEST at UTC+02:00. The IANA identifiers are Asia/Tokyo and Europe/Prague.
Does daylight saving time affect the JST–Prague difference?
Yes at the moment: Prague is on daylight saving time and JST is not, so the -7h gap shifts by an hour when exactly one of them changes clocks.
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 Prague?
Not normally. The -7h gap only pushes the date over the previous day.
What is the time difference between JST and Prague?
Prague is -7h from JST.
What timezone is JST in?
JST operates on its local timezone.
What timezone is Prague in?
Prague operates on Central European Time (CET/CEST). As Central Europe's tourism and tech hub, Prague coordinates with major EU markets.
What are the business hours in Prague?
Standard business hours in Prague are 8:00 AM - 5:00 PM CET.
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 CET timezone?
Major cities in the CET timezone include Paris, Berlin, Rome, Madrid, Amsterdam, Brussels, Vienna, Warsaw.
What is the UTC offset for CET?
Central European Time (CET) is at UTC+01:00. During daylight saving time, it shifts to CEST.
What should I know about the CET timezone?
CET covers more European countries than any other time zone. Spain uses CET despite being geographically aligned with GMT/WET.
When is it midnight in JST, what time is it in Prague?
When it is 12:00 AM (midnight) in JST (JST), it is -7h later in Prague (CET).
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