Warsaw to Osaka
+7hWarsaw
CESTSOURCEOsaka
JSTGreen rows indicate typical business hours (9 AM - 5 PM)
CEST and JST on the World Map
The map below highlights the CEST (Central European Time) and JST (Japan Standard Time) timezone regions across the globe.
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.
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 Warsaw
WikipediaWarsaw operates on Central European Time (CET/CEST). As Central Europe's financial hub, Warsaw's GPW is the largest stock exchange in the region.
Poland has one of the fastest-growing tech sectors in Europe.
About Osaka
WikipediaOsaka operates on Japan Standard Time (JST), UTC+9. As Japan's second economic center and a manufacturing hub, Osaka shares business hours with Tokyo.
Osaka Castle was originally built in 1583 and has been rebuilt several times.
Warsaw vs Osaka: Offsets, DST and Best Call Times
Warsaw runs on Central European Summer Time (CEST) at UTC+02:00, currently observing daylight saving time. Osaka runs on Japan Standard Time (JST) at UTC+09:00. That puts Warsaw 7 hours ahead of Osaka — a difference of +7h at the current offsets.
In practice, when it is 9:00 AM in Warsaw it is 4:00 PM in Osaka. Midnight in Warsaw is 7:00 AM in Osaka.Warsaw observes daylight saving time while Osaka does not, so the gap narrows or widens by an hour part of the year.
Warsaw to Osaka time conversion table
| Warsaw (CEST) | Osaka (JST) | Day |
|---|---|---|
| 12:00 AM | 7:00 AM | same day |
| 6:00 AM | 1:00 PM | same day |
| 7:00 AM | 2:00 PM | same day |
| 8:00 AM | 3:00 PM | same day |
| 9:00 AM | 4:00 PM | same day |
| 12:00 PM | 7:00 PM | same day |
| 3:00 PM | 10:00 PM | same day |
| 5:00 PM | 12:00 AM | next day |
| 6:00 PM | 1:00 AM | next day |
| 9:00 PM | 4:00 AM | next day |
Why people convert Warsaw to Osaka time
- Scheduling a call from Warsaw to Osaka: a 10:00 AM start in Warsaw lands at 5:00 PM in Osaka, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Warsaw and Osaka are inside the 9-to-5 working day between 9:00 AM and 10:00 AM CEST time (4:00 PM–5:00 PM JST). That is roughly 1 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in Warsaw is 3:00 AM in Osaka makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM CEST" is unambiguous; "3 PM" across a +7h gap is not.
- Block 9:00 AM–10:00 AM CEST as the recurring meeting window if you work primarily from Warsaw and need Osaka colleagues present.
- Warsaw: Clocks fall back on Sun, Oct 25, 2026. Re-check this page after that date because the offset changes and so does the +7h gap.
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.
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 Warsaw and Osaka
Both Warsaw and Osaka sit inside the 9 AM – 5 PM working day between 9:00 AM–10:00 AM CEST, which is 4:00 PM–5:00 PM JST. That gives roughly 1 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Warsaw and Osaka overlap for only 60 minutes (9:00 AM–10:00 AM CEST), so meetings have to be booked precisely.
Warsaw is 7 hours ahead of Osaka (CEST UTC+02:00 → JST UTC+09:00). The shared working window is 9:00 AM–10:00 AM CEST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Warsaw
☀ Currently in DST
Standard: UTC+01:00 · DST: UTC+02:00
Clocks fall back on Sun, Oct 25, 2026
Osaka
Does not observe DST
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 Warsaw and Osaka?
Warsaw (CEST, UTC+02:00) is 7 hours ahead of Osaka (JST, UTC+09:00). The gap is currently +7h.
How do I convert Warsaw time to Osaka time?
Add +7h to Warsaw local time. For example, 9:00 AM in Warsaw is 4:00 PM in Osaka.
What time is it in Osaka right now?
Osaka 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 +7h offset from Warsaw.
What is the best time to call Osaka from Warsaw?
Call between 9:00 AM and 10:00 AM CEST — that maps to 4:00 PM–5:00 PM JST and keeps both parties inside the working day.
Which is ahead, Warsaw or Osaka?
Warsaw is 7 hours ahead of Osaka. When it is 12:00 PM in Warsaw it is 7:00 PM in Osaka.
Do Warsaw and Osaka use different time zones?
Warsaw (Poland) uses CEST at UTC+02:00, while Osaka (Japan) uses JST at UTC+09:00. The IANA identifiers are Europe/Warsaw and Asia/Tokyo.
Does daylight saving time affect the Warsaw–Osaka difference?
Yes at the moment: Warsaw is on daylight saving time and Osaka is not, so the +7h gap shifts by an hour when exactly one of them changes clocks.
Which other cities share Warsaw's time zone?
CEST also covers Paris, Berlin, Rome, Madrid, Amsterdam, Brussels, Vienna, Warsaw and 10 more.
Which countries use CEST, Warsaw's zone?
CEST is used in Germany, France, Italy, Spain, Netherlands, Belgium, Austria, Switzerland and 19 more.
Is there a day difference between Warsaw and Osaka?
Not normally. The +7h gap only pushes the date over for late-evening times.
What is the time difference between Warsaw and Osaka?
Osaka is +7h from Warsaw.
What timezone is Warsaw in?
Warsaw operates on Central European Time (CET/CEST). As Central Europe's financial hub, Warsaw's GPW is the largest stock exchange in the region.
What timezone is Osaka in?
Osaka operates on Japan Standard Time (JST), UTC+9. As Japan's second economic center and a manufacturing hub, Osaka shares business hours with Tokyo.
What are the business hours in Warsaw?
Standard business hours in Warsaw are 8:00 AM - 5:00 PM CET.
What are the business hours in Osaka?
Standard business hours in Osaka are 9:00 AM - 6:00 PM JST.
What is the best time to schedule a call between Warsaw and Osaka?
The best overlap for a call is when both cities are in business hours. Warsaw works 8:00 AM - 5:00 PM CET and Osaka works 9:00 AM - 6:00 PM JST (+7h difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Warsaw and Osaka?
Warsaw uses PLN (zł) while Osaka uses JPY (¥). Check current exchange rates when planning travel or business between these cities.
How do Warsaw and Osaka compare in size?
Warsaw has a population of approximately 1.8 million (metro: 3.1 million), while Osaka has approximately 2.8 million (metro: 19 million).
What are the major landmarks in Warsaw and Osaka?
Warsaw is known for Old Town, Royal Castle, Palace of Culture. Osaka is famous for Osaka Castle, Dotonbori, Universal Studios Japan.
Do Warsaw and Osaka have stock exchanges?
Yes. Warsaw has the GPW (Warsaw Stock Exchange) and Osaka has the OSE (Osaka Exchange - derivatives). The +7h time difference affects trading hour overlaps between these exchanges.
Which countries use CET (Central European Time)?
CET is used in Germany, France, Italy, Spain, Netherlands, Belgium, and 21 more countries.
Does CET observe daylight saving time?
Yes, CET switches to CEST during summer months.
What are some interesting facts about CET?
CET covers more European countries than any other time zone. Spain uses CET despite being geographically aligned with GMT/WET.
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 Warsaw, what time is it in Osaka?
When it is 12:00 AM (midnight) in Warsaw (CET), it is +7h later in Osaka (JST).
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