Working-hour overlap
When both cities are at work
There is no full hour when both cities are inside a standard 09:00–17:00 working day. Use an early start in one city or an evening call in the other.
Time converter
New York to Tokyo
United States
New York
10:5424
Wednesday, 29 July 2026GMT-4 · UTC−4
Japan
Tokyo
23:5424
Wednesday, 29 July 2026GMT+9 · UTC+9
Outside usual working hours
22:00GMT+9
Wednesday, 29 July 2026 in Tokyo
13 hours ahead of New York
Working together
The useful part of the difference
A major finance and technology route crossing the date boundary.
Calendar boundary
Check the date, not just the hour
At 09:00 in New York, Tokyo is on the same calendar date.
Daylight saving time
The gap can move during the year
Seasonal clock changes alter the gap: it is 14 hours ahead on the January reference date and 13 hours ahead on the July reference date. Transition weeks can differ again, so check the exact date.