Time difference between Tehran and Tokyo
Tokyo is 5 hours 30 minutes ahead of Tehran. When it's 9:00 in Tehran, it's 14:30 in Tokyo.
Tokyo is 5 hours 30 minutes ahead of Tehran.
On Friday, 2 October 2026, 09:00 in Tehran is 14:30 in Tokyo. Tehran is UTC+3:30; Tokyo is UTC+9.
The gap through 2026
It stays 5 hours 30 minutes all year — neither city changes its clocks against the other.
Tehran to Tokyo, hour by hour
On Monday 5 October.
| Tehran | Tokyo |
|---|---|
| 07:00 Early morning | 12:30 Working hours |
| 08:00 Early morning | 13:30 Working hours |
| 09:00 Working hours | 14:30 Working hours |
| 10:00 Working hours | 15:30 Working hours |
| 11:00 Working hours | 16:30 Working hours |
| 12:00 Working hours | 17:30 Evening |
| 13:00 Working hours | 18:30 Evening |
| 14:00 Working hours | 19:30 Evening |
| 15:00 Working hours | 20:30 Evening |
| 16:00 Working hours | 21:30 Evening |
| 17:00 Evening | 22:30 Sleeping hours |
| 18:00 Evening | 23:30 Sleeping hours |
| 19:00 Evening | 00:30+1 Sleeping hours |
| 20:00 Evening | 01:30+1 Sleeping hours |
| 21:00 Evening | 02:30+1 Sleeping hours |
| 22:00 Sleeping hours | 03:30+1 Sleeping hours |
Daylight saving in 2026
Neither Tehran nor Tokyo changes its clocks, so the difference is the same all year.
Best times for a call
Working hours (09:00–17:00) overlap for 2 hours 30 minutes: 09:00–11:30 in Tehran, which is 14:30–17:00 in Tokyo.
- Tehran 09:00Working hoursTokyo 14:30Working hours
- Tehran 10:00Working hoursTokyo 15:30Working hours
- Tehran 11:00Working hoursTokyo 16:30Working hours
More time differences for Tehran and Tokyo
- New York and Tokyo
- Los Angeles and Tokyo
- Chicago and Tokyo
- Toronto and Tokyo
- London and Tokyo
- Paris and Tokyo
- Berlin and Tokyo
- Dubai and Tokyo
- Karachi and Tokyo
- Mumbai and Tokyo
- Singapore and Tokyo
- Tokyo and Sydney
- New York and Tehran
- Los Angeles and Tehran
- Chicago and Tehran
- London and Tehran
- Paris and Tehran
- Berlin and Tehran
- Denver and Tehran
- Denver and Tokyo
- Toronto and Tehran
- Vancouver and Tehran
- Vancouver and Tokyo
- Mexico City and Tehran
- Mexico City and Tokyo
- São Paulo and Tehran
- São Paulo and Tokyo
- Buenos Aires and Tehran
- Buenos Aires and Tokyo
- Bogotá and Tehran
- Bogotá and Tokyo
- Dublin and Tehran
How the time difference calculator works
The difference is each city's offset from UTC on the date you pick, subtracted. Offsets come from the IANA time zone database in your browser.
Because countries change their clocks on different dates — or not at all — the gap between two cities can change for a few weeks a year. The calculator lists every change in the year.
Examples
- London is 5 hours ahead of New York for most of the year, but only 4 hours ahead for about three weeks in March and one week in late October.
- Dubai doesn't change its clocks, so its gap to London is 4 hours in winter and 3 hours in summer.
Good for
- Knowing when a colleague's day starts
- Setting expectations for replies across time zones
- Planning travel and jet lag
Frequently asked questions
- What time is it in Tokyo when it's 9 AM in Tehran?
- 2:30 PM — as of 2 October 2026. Tokyo is 5 hours 30 minutes ahead of Tehran.
- Does the time difference between Tehran and Tokyo change?
- No. It's 5 hours 30 minutes all through 2026: neither city changes its clocks.
- What's the best time for a call between Tehran and Tokyo?
- Between 09:00 and 11:30 Tehran time, when both cities are in working hours (09:00–17:00).
- What time zones are Tehran and Tokyo in?
- Tehran uses Asia/Tehran (UTC+3:30 today); Tokyo uses Asia/Tokyo (UTC+9 today).
Related tools
- Time Zone ConverterConvert a time between cities and time zones, with daylight saving handled and a clear sign of whether it's a reasonable hour for everyone..
- Meeting Time FinderFind the best meeting time for people in different time zones.
- Date CalculatorAdd or subtract days, weeks, months or years from a date, or count the days, weeks and months between two dates..
- Working Hours CalculatorCalculate working hours per day, week, month and year from your shifts, breaks and working week — Monday–Friday, Sunday–Thursday or your own..
See everyone's local time as you schedule
Daykite converts every time in your calendar, so nobody gets an invite at 3 a.m.