Rome to JST
+7hRome
CESTSOURCEJST
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.
Time Conversion Guide: Rome to JST
Rome runs on Central European Summer Time (CEST) at UTC+02:00, currently observing daylight saving time. JST runs on Japan Standard Time (JST) at UTC+09:00. That puts Rome 7 hours ahead of JST — a difference of +7h at the current offsets.
In practice, when it is 9:00 AM in Rome it is 4:00 PM in JST. Midnight in Rome is 7:00 AM in JST.Rome observes daylight saving time while JST does not, so the gap narrows or widens by an hour part of the year.
Rome to JST time conversion table
| Rome (CEST) | JST (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 Rome to JST time
- Scheduling a call from Rome to JST: a 10:00 AM start in Rome lands at 5:00 PM in JST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Rome and JST 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.
- Booking travel or deliveries: tracking JST local time against Rome keeps pickup windows and arrival estimates honest across the +7h offset.
- 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 Rome and need JST colleagues present.
- Rome: 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 Rome and JST
Both Rome and JST 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
Rome and JST overlap for only 60 minutes (9:00 AM–10:00 AM CEST), so meetings have to be booked precisely.
Rome is 7 hours ahead of JST (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
Rome
☀ Currently in DST
Standard: UTC+01:00 · DST: UTC+02:00
Clocks fall back on Sun, Oct 25, 2026
JST
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 Rome and JST?
Rome (CEST, UTC+02:00) is 7 hours ahead of JST (JST, UTC+09:00). The gap is currently +7h.
How do I convert Rome time to JST time?
Add +7h to Rome local time. For example, 9:00 AM in Rome is 4:00 PM in JST.
What time is it in JST right now?
JST 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 Rome.
What is the best time to call JST from Rome?
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, Rome or JST?
Rome is 7 hours ahead of JST. When it is 12:00 PM in Rome it is 7:00 PM in JST.
Do Rome and JST use different time zones?
Rome (Italy) uses CEST at UTC+02:00, while JST uses JST at UTC+09:00. The IANA identifiers are Europe/Rome and Asia/Tokyo.
Does daylight saving time affect the Rome–JST difference?
Yes at the moment: Rome 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 Rome's time zone?
CEST also covers Paris, Berlin, Rome, Madrid, Amsterdam, Brussels, Vienna, Warsaw and 10 more.
Which countries use CEST, Rome's zone?
CEST is used in Germany, France, Italy, Spain, Netherlands, Belgium, Austria, Switzerland and 19 more.
Is there a day difference between Rome and JST?
Not normally. The +7h gap only pushes the date over for late-evening times.
What is the time difference between Rome and JST?
JST is +7h from Rome.
What timezone is Rome in?
Rome operates on its local timezone.
What timezone is JST in?
JST operates on its local timezone.
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 Rome, what time is it in JST?
When it is 12:00 AM (midnight) in Rome (CET), it is +7h later in JST (JST).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More Rome time conversions
- rome to italy
- rome to london
- rome to dublin
- rome to paris
- rome to berlin
- rome to amsterdam
- rome to madrid
- rome to zurich
- rome to stockholm
- rome to moscow
- rome to istanbul
- rome to lisbon
- rome to warsaw
- rome to new york
- rome to dubai
- rome to tokyo
- rome to singapore
- rome to sydney
- rome to los angeles
- rome to delhi
- rome to mumbai
- rome to hong kong
- rome to toronto
- rome to kathmandu
- new york to rome
- london to rome
- dubai to rome
- tokyo to rome
- singapore to rome
- sydney to rome
- los angeles to rome
- paris to rome
- delhi to rome
- mumbai to rome
- berlin to rome
- hong kong to rome
See every conversion from Rome →·See every conversion from JST →