Time Difference Between Naperville and Tokyo
Tokyo is 14 hours ahead Naperville.
United States
Naperville
America/Chicago · UTC-5
Japan
Tokyo
Asia/Tokyo · UTC+9
Best Times to Meet
Hours where standard working time (9 AM – 6 PM) overlaps in both Naperville and Tokyo.
Standard working hours don't overlap between Naperville and Tokyo. Consider early-morning calls in Naperville or late-evening calls in Tokyo.
Naperville to Tokyo — 24-Hour Conversion
Each row shows the equivalent local time in Tokyo for an hour in Naperville. Working-hours rows (9–18) are highlighted.
| Naperville | Tokyo | Match |
|---|---|---|
| Workday in Tokyo | ||
| Workday in Tokyo | ||
| Workday in Tokyo | ||
| Workday in Tokyo | ||
| Off hours | ||
| Off hours | ||
| Off hours | ||
| Off hours | ||
| Off hours | ||
| Workday in Naperville | ||
| +1 day | Workday in Naperville | |
| +1 day | Workday in Naperville | |
| +1 day | Workday in Naperville | |
| +1 day | Workday in Naperville | |
| +1 day | Workday in Naperville | |
| +1 day | Workday in Naperville | |
| +1 day | Workday in Naperville | |
| +1 day | Workday in Naperville | |
| +1 day | Off hours | |
| +1 day | Workday in Tokyo | |
| +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 Naperville and Tokyo?
Tokyo, Japan (UTC+9) is 14 hours ahead Naperville, United States (UTC-5).
What is the best time to schedule a meeting between Naperville 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 Naperville 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 Naperville, what time is it in Tokyo?
Use the conversion table on this page — every hour in Naperville is mapped to its equivalent local time in Tokyo, including day shift markers when the date differs.