Time Difference

Tehran vs Chennai Time Difference

Compare the current local time in Tehran, Iran and Chennai, India.

Live local timeDST awareUTC offsets

From

Tehran

Iran

4:09 AM

Mon, Aug 17

UTC+3:30Asia/Tehran

Difference

2 hours

Swap

Chennai

India

6:09 AM

Mon, Aug 17

UTC+5:30Asia/Kolkata

Current difference

Chennai is currently 2 hours 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 Chennai hour by hour

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

24-hour day

Best working-hours overlap

9:00 AM – 4:00 PM in Tehran

corresponds to 11:00 AM – 6:00 PM in Chennai.

7 hours overlap

Tehran

Asia/Tehran

Chennai

Asia/Kolkata

Availability

12:00 AM

Mon, Aug 17

2:00 AM

Mon, Aug 17

Night

1:00 AM

Mon, Aug 17

3:00 AM

Mon, Aug 17

Night

2:00 AM

Mon, Aug 17

4:00 AM

Mon, Aug 17

Night

3:00 AM

Mon, Aug 17

5:00 AM

Mon, Aug 17

Night

4:00 AM

Mon, Aug 17

6:00 AM

Mon, Aug 17

Night

5:00 AM

Mon, Aug 17

7:00 AM

Mon, Aug 17

Night

6:00 AM

Mon, Aug 17

8:00 AM

Mon, Aug 17

Night

7:00 AM

Mon, Aug 17

9:00 AM

Mon, Aug 17

Possible

8:00 AM

Mon, Aug 17

10:00 AM

Mon, Aug 17

Possible

9:00 AM

Mon, Aug 17

11:00 AM

Mon, Aug 17

Good overlap

10:00 AM

Mon, Aug 17

12:00 PM

Mon, Aug 17

Good overlap

11:00 AM

Mon, Aug 17

1:00 PM

Mon, Aug 17

Good overlap

12:00 PM

Mon, Aug 17

2:00 PM

Mon, Aug 17

Good overlap

1:00 PM

Mon, Aug 17

3:00 PM

Mon, Aug 17

Good overlap

2:00 PM

Mon, Aug 17

4:00 PM

Mon, Aug 17

Good overlap

3:00 PM

Mon, Aug 17

5:00 PM

Mon, Aug 17

Good overlap

4:00 PM

Mon, Aug 17

6:00 PM

Mon, Aug 17

Possible

5:00 PM

Mon, Aug 17

7:00 PM

Mon, Aug 17

Possible

6:00 PM

Mon, Aug 17

8:00 PM

Mon, Aug 17

Possible

7:00 PM

Mon, Aug 17

9:00 PM

Mon, Aug 17

Night

8:00 PM

Mon, Aug 17

10:00 PM

Mon, Aug 17

Night

9:00 PM

Mon, Aug 17

11:00 PM

Mon, Aug 17

Night

10:00 PM

Mon, Aug 17

12:00 AM

Next day

Tue, Aug 18

Night

11:00 PM

Mon, Aug 17

1:00 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 Chennai from Tehran

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

Tehran

9:00 AM – 4:00 PM

Iran

Best overlap

Chennai

11:00 AM – 6:00 PM

India

The best time to call Chennai from Tehran is between 9:00 AM and 4:00 PM in Tehran. This corresponds to 11:00 AM – 6:00 PM in Chennai.

Other reasonable windows

Tehran

7:00 AM – 9:00 AM

Chennai

9:00 AM – 11:00 AM

Tehran

4:00 PM – 7:00 PM

Chennai

6:00 PM – 9:00 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 Chennai time difference explained

Current local-time relationship

Chennai is currently 2 hours ahead of Tehran.

Tehran uses Asia/Tehran and currently has an offset of UTC+3:30. Chennai uses Asia/Kolkata and currently has an offset of UTC+5:30.

Working-hours overlap

For a typical 9:00 AM–6:00 PM workday, the cities overlap from 9:00 AM to 4:00 PM in Tehran, corresponding to 11:00 AM–6:00 PM in Chennai.

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 Chennai.

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Local clocks

Explore each city

Current time in Tehran Current time in Chennai

FAQ

Tehran to Chennai time difference FAQ

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

What is the time difference between Tehran and Chennai?

The current time difference between Tehran and Chennai is 2 hours. Chennai is currently 2 hours ahead of Tehran.

Is Chennai ahead of or behind Tehran?

Chennai is currently 2 hours ahead of Tehran.

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

Using the current UTC offsets, 9:00 AM in Tehran corresponds to 11:00 AM in Chennai. The exact difference can change when daylight-saving rules change.

What is the best time to call Chennai from Tehran?

Typical 9:00 AM–6:00 PM business hours overlap between 9:00 AM and 4:00 PM in Tehran. This corresponds to 11:00 AM–6:00 PM in Chennai.

Can the time difference between Tehran and Chennai change?

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