Time Difference Between Castlereagh and Tokyo
Tokyo is 8 hours ahead Castlereagh.
United Kingdom
Castlereagh
Europe/London · UTC+1
Japan
Tokyo
Asia/Tokyo · UTC+9
Best Times to Meet
Hours where standard working time (9 AM – 6 PM) overlaps in both Castlereagh and Tokyo.
Castlereagh
9:00 AM
Tokyo
5:00 PM
Castlereagh to Tokyo — 24-Hour Conversion
Each row shows the equivalent local time in Tokyo for an hour in Castlereagh. Working-hours rows (9–18) are highlighted.
| Castlereagh | Tokyo | Match |
|---|---|---|
| Off hours | ||
| Workday in Tokyo | ||
| Workday in Tokyo | ||
| Workday in Tokyo | ||
| Workday in Tokyo | ||
| Workday in Tokyo | ||
| Workday in Tokyo | ||
| Workday in Tokyo | ||
| Workday in Tokyo | ||
| Best for meetings | ||
| Workday in Castlereagh | ||
| Workday in Castlereagh | ||
| Workday in Castlereagh | ||
| Workday in Castlereagh | ||
| Workday in Castlereagh | ||
| Workday in Castlereagh | ||
| +1 day | Workday in Castlereagh | |
| +1 day | Workday in Castlereagh | |
| +1 day | Off hours | |
| +1 day | Off hours | |
| +1 day | Off hours | |
| +1 day | Off hours | |
| +1 day | Off hours | |
| +1 day | Off hours |
Frequently Asked Questions
What is the time difference between Castlereagh and Tokyo?
Tokyo, Japan (UTC+9) is 8 hours ahead Castlereagh, United Kingdom (UTC+1).
What is the best time to schedule a meeting between Castlereagh and Tokyo?
The best meeting times overlap when both cities are within standard working hours (9 AM – 6 PM). The full hour-by-hour table on this page lists every overlap window.
Does daylight saving time change the difference between Castlereagh and Tokyo?
Yes — when one city observes daylight saving time and the other does not, the gap shifts by an hour. The conversion table on this page reflects the current offset, including any active DST.
When it is 9 AM in Castlereagh, what time is it in Tokyo?
Use the conversion table on this page — every hour in Castlereagh is mapped to its equivalent local time in Tokyo, including day shift markers when the date differs.