JST to Rome
-7hJST
JSTSOURCERome
CETGreen rows indicate typical business hours (9 AM - 5 PM)
JST and CET on the World Map
The map below highlights the JST (Japan Standard Time) and CET (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.
JST to Rome Time Difference – Complete Guide
JST (Japan Standard Time) operates on the Japan Standard Time (UTC+09:00). Rome, Italy uses Central European Time (UTC+01:00).
The time difference between JST and Rome is 420 minutes (+7h). When it's noon in JST, it's 05:00 AM in Rome.
Why Convert JST to Rome Time?
The time difference of 7 hours between JST and Rome can significantly impact business operations and personal communication. By using this converter, you can easily find the overlapping business hours and schedule your interactions when both parties are available.
Best Practice: When proposing meeting times to someone in Rome, offer a few options in their local time to show consideration for the 7-hour difference.
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 Rome
If you want to reach someone in Rome during standard business hours (9 AM – 5 PM CET), the best time to call from JST would be:
- Rome 9:00 AM = JST 04:00 PM
- Rome 12:00 PM = JST 07:00 PM
- Rome 5:00 PM = JST 12:00 AM
Business Hours Overlap
JST and Rome have a partial business hours overlap. The best window for meetings and calls is when both locations are in their working hours.
In conclusion, the -7h time shift from JST to Rome doesn't have to be a hurdle. With our interactive converter, you can easily find the perfect time to connect.
🕐 Daylight Saving Time Info
JST
Does not observe DST
Rome
☀ 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 Rome?
Rome is -7h from JST.
What timezone is JST in?
JST operates on its local timezone.
What timezone is Rome in?
Rome 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 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 Rome?
When it is 12:00 AM (midnight) in JST (JST), it is -7h later in Rome (CET).
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