Tokyo to Rome Time
JST to CET Converter — 9 AM JST is 1:00 AM CET
Tokyo is 8 hours ahead of Rome. Convert any time between Tokyo (JST) and Rome (CET/CEST) instantly.
Tokyo
Japan
Rome
Italy
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Time Zone Comparison
Tokyo to Rome Time Conversion Table
| Tokyo (JST) | Rome (CET) |
|---|---|
| 12:00 AM | 5:00 PM |
| 2:00 AM | 7:00 PM |
| 4:00 AM | 9:00 PM |
| 6:00 AM | 11:00 PM |
| 8:00 AM | 1:00 AM |
| 10:00 AM | 3:00 AM |
| 12:00 PM | 5:00 AM |
| 2:00 PM | 7:00 AM |
| 4:00 PM | 9:00 AM |
| 6:00 PM | 11:00 AM |
| 8:00 PM | 1:00 PM |
| 10:00 PM | 3:00 PM |
Tokyo & Rome — Business & Scheduling Guide
Tokyo (Japan) is the world's third-largest economy, with key industries in automotive, electronics, robotics, and precision instruments. Rome (Italy) is an important regional economy, known for diverse sectors including services and trade. With a 8-hour time difference, professionals frequently schedule cross-border calls between these two cities for international trade, remote team collaboration, and client meetings.
Scheduling Meetings Between Tokyo and Rome
The 8-hour difference between Tokyo and Rome requires careful scheduling. The best overlap window is typically 2–4 hours when both cities are within working hours. Japanese business culture places high value on respect and hierarchy, with typical hours of 9 AM–6 PM. Business hours typically follow a 9 AM–5 PM schedule. Teams often designate specific "overlap hours" for real-time collaboration and use asynchronous communication (Slack, email, recorded video) for the rest of the day.
Daylight Saving Time Considerations
Rome observes Daylight Saving Time (CET/CEST), while Tokyo stays on JST year-round. When Rome switches to daylight time, the effective time difference shifts by 1 hour. This typically happens in spring and fall, and the exact dates vary by country. If you have recurring cross-timezone meetings, recalculate the schedule after each DST transition.
JST to CET — Quick Reference
JST (JST) stands for the timezone used in Tokyo, Japan (UTC+9). CET (CET/CEST) is the timezone used in Rome, Italy (UTC+1). Tokyo is 8 hours ahead of Rome.
To convert JST to CET, subtract 8 hours from JST time. For example, JST 9:00 AM = CET 1:00 AM.
Key Facts
- •Time difference: Tokyo (UTC+9) is 8 hours ahead of Rome (UTC+1).
- •Daylight Saving Time: Tokyo does not observe DST (JST). Rome observes DST (CET/CEST).
- •Regions: Tokyo is located in Japan and uses the JST time zone. Rome is located in Italy and uses the CET/CEST time zone.
- •Best time to call: There are no overlapping standard work hours (9 AM - 5 PM) between these two cities.
Frequently Asked Questions
What is the time difference between Tokyo and Rome?
Tokyo is 8 hours ahead of Rome.
What time is it in Rome when it's 9 AM in Tokyo?
When it's 9:00 AM in Tokyo, it is 1:00 AM in Rome.
What time is 9 PM JST in CET?
9 PM JST (Tokyo time) is 1:00 PM CET (Rome time). This is a common time people check when scheduling evening calls across these two time zones.
When is the best time to schedule a meeting between Tokyo and Rome?
There are no overlapping standard work hours (9 AM - 5 PM) between these two cities.
How do I convert JST to CET?
JST (JST) is the timezone for Tokyo, Japan (UTC+9). CET (CET/CEST) is the timezone for Rome, Italy (UTC+1). Tokyo is 8 hours ahead of Rome. Quick examples: 9 AM JST = 1:00 AM CET, 12 PM JST = 4:00 AM CET, 3 PM JST = 7:00 AM CET, 6 PM JST = 10:00 AM CET.
Is Tokyo ahead of or behind Rome?
Tokyo is 8 hours ahead of Rome. When it's noon in Tokyo, it's 4:00 AM in Rome.
Does Tokyo or Rome change clocks for Daylight Saving Time?
No, Tokyo does not observe DST — it stays on JST year-round. Rome observes DST and switches between CET/CEST. Because only one city observes DST, the time difference shifts by 1 hour during transition periods (typically March/April and October/November).
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