Time Difference

Tehran vs Osaka Time Difference

Compare the current local time in Tehran, Iran and Osaka, Japan.

Live local timeDST awareUTC offsets

From

Tehran

Iran

1:59 AM

Mon, Aug 17

UTC+3:30Asia/Tehran

Difference

5h 30m

Swap

Osaka

Japan

7:29 AM

Mon, Aug 17

UTC+9Asia/Tokyo

Current difference

Osaka is currently 5 hours 30 minutes ahead of Tehran.

This difference is calculated using the current UTC offsets for both locations and automatically reflects daylight-saving changes.

24-hour comparison

Compare Tehran and Osaka hour by hour

See how a full local day in Tehran, Iran maps to Osaka, Japan. TimeInOne automatically accounts for timezone offsets, date changes and daylight-saving transitions.

24-hour day

Best working-hours overlap

9:00 AM – 1:00 PM in Tehran

corresponds to 2:30 PM – 6:30 PM in Osaka.

4 hours overlap

Tehran

Asia/Tehran

Osaka

Asia/Tokyo

Availability

12:00 AM

Mon, Aug 17

5:30 AM

Mon, Aug 17

Night

1:00 AM

Mon, Aug 17

6:30 AM

Mon, Aug 17

Night

2:00 AM

Mon, Aug 17

7:30 AM

Mon, Aug 17

Night

3:00 AM

Mon, Aug 17

8:30 AM

Mon, Aug 17

Night

4:00 AM

Mon, Aug 17

9:30 AM

Mon, Aug 17

Night

5:00 AM

Mon, Aug 17

10:30 AM

Mon, Aug 17

Night

6:00 AM

Mon, Aug 17

11:30 AM

Mon, Aug 17

Night

7:00 AM

Mon, Aug 17

12:30 PM

Mon, Aug 17

Possible

8:00 AM

Mon, Aug 17

1:30 PM

Mon, Aug 17

Possible

9:00 AM

Mon, Aug 17

2:30 PM

Mon, Aug 17

Good overlap

10:00 AM

Mon, Aug 17

3:30 PM

Mon, Aug 17

Good overlap

11:00 AM

Mon, Aug 17

4:30 PM

Mon, Aug 17

Good overlap

12:00 PM

Mon, Aug 17

5:30 PM

Mon, Aug 17

Good overlap

1:00 PM

Mon, Aug 17

6:30 PM

Mon, Aug 17

Possible

2:00 PM

Mon, Aug 17

7:30 PM

Mon, Aug 17

Possible

3:00 PM

Mon, Aug 17

8:30 PM

Mon, Aug 17

Possible

4:00 PM

Mon, Aug 17

9:30 PM

Mon, Aug 17

Night

5:00 PM

Mon, Aug 17

10:30 PM

Mon, Aug 17

Night

6:00 PM

Mon, Aug 17

11:30 PM

Mon, Aug 17

Night

7:00 PM

Mon, Aug 17

12:30 AM

Next day

Tue, Aug 18

Night

8:00 PM

Mon, Aug 17

1:30 AM

Next day

Tue, Aug 18

Night

9:00 PM

Mon, Aug 17

2:30 AM

Next day

Tue, Aug 18

Night

10:00 PM

Mon, Aug 17

3:30 AM

Next day

Tue, Aug 18

Night

11:00 PM

Mon, Aug 17

4:30 AM

Next day

Tue, Aug 18

Night

Working-hour labels use a general 9:00 AM–6:00 PM schedule. Individual schedules may differ.

On daylight-saving transition dates, a local day can contain 23 or 25 real hours instead of 24.

Call planning

Best time to call Osaka from Tehran

Compare typical business hours in Tehran, Iran and Osaka, Japan to find a practical time for calls, meetings or international coordination.

Tehran

9:00 AM – 1:00 PM

Iran

Best overlap

Osaka

2:30 PM – 6:30 PM

Japan

The best time to call Osaka from Tehran is between 9:00 AM and 1:00 PM in Tehran. This corresponds to 2:30 PM – 6:30 PM in Osaka.

Other reasonable windows

Tehran

7:00 AM – 9:00 AM

Osaka

12:30 PM – 2:30 PM

Tehran

1:00 PM – 4:00 PM

Osaka

6:30 PM – 9:30 PM

Recommendations use typical 9:00 AM–6:00 PM business hours and a broader 7:00 AM–9:00 PM acceptable calling window. Individual schedules may differ.

Time difference explained

Tehran and Osaka time difference explained

Current local-time relationship

Osaka is currently 5 hours and 30 minutes ahead of Tehran.

Tehran uses Asia/Tehran and currently has an offset of UTC+3:30. Osaka uses Asia/Tokyo and currently has an offset of UTC+9.

Working-hours overlap

For a typical 9:00 AM–6:00 PM workday, the cities overlap from 9:00 AM to 12:30 PM in Tehran, corresponding to 2:30 PM–6:00 PM in Osaka.

Because UTC offsets can change during the year, always check the selected date when planning an important international call or meeting.

Convert a specific time

Need more than the current difference?

Convert a specific date and local time between Tehran and Osaka.

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Local clocks

Explore each city

Current time in Tehran Current time in Osaka

FAQ

Tehran to Osaka time difference FAQ

Common questions about the current time difference, UTC offsets, daylight-saving changes and practical calling hours between Tehran and Osaka.

What is the time difference between Tehran and Osaka?

The current time difference between Tehran and Osaka is 5h 30m. Osaka is currently 5 hours and 30 minutes ahead of Tehran.

Is Osaka ahead of or behind Tehran?

Osaka is currently 5 hours and 30 minutes ahead of Tehran.

What time is it in Osaka when it is 9:00 AM in Tehran?

Using the current UTC offsets, 9:00 AM in Tehran corresponds to 2:30 PM in Osaka. The exact difference can change when daylight-saving rules change.

What is the best time to call Osaka from Tehran?

Typical 9:00 AM–6:00 PM business hours overlap between 9:00 AM and 12:30 PM in Tehran. This corresponds to 2:30 PM–6:00 PM in Osaka.

Can the time difference between Tehran and Osaka change?

Yes. The time difference can change if Tehran or Osaka changes its UTC offset because of daylight-saving or other local time-zone rules. TimeInOne uses the IANA zones Asia/Tehran and Asia/Tokyo for date-aware calculations.