The best time to meet between Istanbul and Tokyo is 9:00 AM–11:00 AM GMT+3 (3:00 PM–5:00 PM GMT+9), when both cities are within standard working hours.
Plan a meeting →| Detail | Value |
|---|---|
| Time difference | 6h (Tokyo is ahead) |
| Istanbul 9–5 in Tokyo time | 3:00 PM–11:00 PM GMT+9 |
| Tokyo 9–5 in Istanbul time | 3:00 AM–11:00 AM GMT+3 |
| Overlap window | 9:00 AM–11:00 AM GMT+3 / 3:00 PM–5:00 PM GMT+9 |
| Recommended slots | 9:00 AM GMT+3 = 3:00 PM GMT+9, 10:00 AM GMT+3 = 4:00 PM GMT+9 |
The 6h offset between Istanbul and Tokyo is not just a number — it reshapes the entire rhythm of collaboration. Tokyo clocks out while Istanbul is still at lunch. Teams that don't plan this deliberately spend their overlap on firefighting instead of actual work.
The 2h overlap window runs at the edge of both teams' days. For Istanbul's side it's a late-morning meeting; for Tokyo it's early afternoon. Neither is painful, which is exactly why it works. Anchor your recurring sync here and treat the rest of the day as async territory.
The less obvious scheduling risk is daylight saving time mismatch. Istanbul and Tokyo may not shift their clocks on the same date. A meeting booked as "10 AM IST" in January might show up as "11 AM IST" in a colleague's calendar in March if your calendar app doesn't handle DST transitions correctly. Check the DST note on this page before setting up recurring meetings.
Add the rest of your team above and the planner scales to everyone at once. A three-city team spanning Istanbul, Tokyo, and a third timezone often has less overlap than any two-city pair in isolation — surfacing that constraint early prevents scheduling that works on paper but burns people out in practice.
Istanbul is UTC+3 and Tokyo is UTC+9, a difference of 6h. This gap is constant year-round.
The best meeting time is during the 2h of shared business hours — typically 9:00 AM to 11:00 AM GMT+3.
No. Neither Istanbul nor Tokyo observes daylight saving time, so the 6h gap is constant year-round.
Istanbul and Tokyo share 2h of business-hours overlap (assuming 9 AM–5 PM local time for both).