Time Difference Between Castries and Tokyo
Tokyo is 13 hours ahead Castries.
Saint Lucia
Castries
America/St_Lucia · UTC-4
Japan
Tokyo
Asia/Tokyo · UTC+9
Best Times to Meet
Hours where standard working time (9 AM – 6 PM) overlaps in both Castries and Tokyo.
Standard working hours don't overlap between Castries and Tokyo. Consider early-morning calls in Castries or late-evening calls in Tokyo.
Castries to Tokyo — 24-Hour Conversion
Each row shows the equivalent local time in Tokyo for an hour in Castries. Working-hours rows (9–18) are highlighted.
| Castries | Tokyo | Match |
|---|---|---|
| Workday in Tokyo | ||
| Workday in Tokyo | ||
| Workday in Tokyo | ||
| Workday in Tokyo | ||
| Workday in Tokyo | ||
| Off hours | ||
| Off hours | ||
| Off hours | ||
| Off hours | ||
| Workday in Castries | ||
| Workday in Castries | ||
| +1 day | Workday in Castries | |
| +1 day | Workday in Castries | |
| +1 day | Workday in Castries | |
| +1 day | Workday in Castries | |
| +1 day | Workday in Castries | |
| +1 day | Workday in Castries | |
| +1 day | Workday in Castries | |
| +1 day | Off hours | |
| +1 day | Off hours | |
| +1 day | Workday in Tokyo | |
| +1 day | Workday in Tokyo | |
| +1 day | Workday in Tokyo | |
| +1 day | Workday in Tokyo |
Frequently Asked Questions
What is the time difference between Castries and Tokyo?
Tokyo, Japan (UTC+9) is 13 hours ahead Castries, Saint Lucia (UTC-4).
What is the best time to schedule a meeting between Castries 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 Castries 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 Castries, what time is it in Tokyo?
Use the conversion table on this page — every hour in Castries is mapped to its equivalent local time in Tokyo, including day shift markers when the date differs.