Tokyo to Dublin Time
JST to GMT Converter — 9 AM JST is 12:00 AM GMT
Tokyo is 9 hours ahead of Dublin. Convert any time between Tokyo (JST) and Dublin (GMT/IST) instantly.
Tokyo
Japan
Dublin
Ireland
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Time Zone Comparison
Tokyo to Dublin Time Conversion Table
| Tokyo (JST) | Dublin (GMT) |
|---|---|
| 12:00 AM | 4:00 PM |
| 2:00 AM | 6:00 PM |
| 4:00 AM | 8:00 PM |
| 6:00 AM | 10:00 PM |
| 8:00 AM | 12:00 AM |
| 10:00 AM | 2:00 AM |
| 12:00 PM | 4:00 AM |
| 2:00 PM | 6:00 AM |
| 4:00 PM | 8:00 AM |
| 6:00 PM | 10:00 AM |
| 8:00 PM | 12:00 PM |
| 10:00 PM | 2:00 PM |
Tokyo & Dublin — Business & Scheduling Guide
Tokyo (Japan) is the world's third-largest economy, with key industries in automotive, electronics, robotics, and precision instruments. Dublin (Ireland) is an important regional economy, known for diverse sectors including services and trade. With a 9-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 Dublin
With Dublin 9 hours behind Tokyo, there is minimal overlap in standard business hours. Most teams alternate meeting times to share the burden of early-morning or late-evening calls fairly. 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. Consider recording meetings for those who can't attend live, and use shared documents for async collaboration.
Daylight Saving Time Considerations
Dublin observes Daylight Saving Time (GMT/IST), while Tokyo stays on JST year-round. When Dublin 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 GMT — Quick Reference
JST (JST) stands for the timezone used in Tokyo, Japan (UTC+9). GMT (GMT/IST) is the timezone used in Dublin, Ireland (UTC+0). Tokyo is 9 hours ahead of Dublin.
To convert JST to GMT, subtract 9 hours from JST time. For example, JST 9:00 AM = GMT 12:00 AM.
Key Facts
- •Time difference: Tokyo (UTC+9) is 9 hours ahead of Dublin (UTC+0).
- •Daylight Saving Time: Tokyo does not observe DST (JST). Dublin observes DST (GMT/IST).
- •Regions: Tokyo is located in Japan and uses the JST time zone. Dublin is located in Ireland and uses the GMT/IST 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 Dublin?
Tokyo is 9 hours ahead of Dublin.
What time is it in Dublin when it's 9 AM in Tokyo?
When it's 9:00 AM in Tokyo, it is 12:00 AM in Dublin.
What time is 9 PM JST in GMT?
9 PM JST (Tokyo time) is 12:00 PM GMT (Dublin 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 Dublin?
There are no overlapping standard work hours (9 AM - 5 PM) between these two cities.
How do I convert JST to GMT?
JST (JST) is the timezone for Tokyo, Japan (UTC+9). GMT (GMT/IST) is the timezone for Dublin, Ireland (UTC+0). Tokyo is 9 hours ahead of Dublin. Quick examples: 9 AM JST = 12:00 AM GMT, 12 PM JST = 3:00 AM GMT, 3 PM JST = 6:00 AM GMT, 6 PM JST = 9:00 AM GMT.
Is Tokyo ahead of or behind Dublin?
Tokyo is 9 hours ahead of Dublin. When it's noon in Tokyo, it's 3:00 AM in Dublin.
Does Tokyo or Dublin change clocks for Daylight Saving Time?
No, Tokyo does not observe DST — it stays on JST year-round. Dublin observes DST and switches between GMT/IST. 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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