Time Difference

Chattogram vs Tehran Time Difference

Compare the current local time in Chattogram, Bangladesh and Tehran, Iran.

Live local timeDST awareUTC offsets

From

Chattogram

Bangladesh

5:28 AM

Mon, Aug 17

UTC+6Asia/Dhaka

Difference

2h 30m

Swap

Tehran

Iran

2:58 AM

Mon, Aug 17

UTC+3:30Asia/Tehran

Current difference

Tehran is currently 2 hours 30 minutes behind Chattogram.

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

24-hour comparison

Compare Chattogram and Tehran hour by hour

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

24-hour day

Best working-hours overlap

12:00 PM – 6:00 PM in Chattogram

corresponds to 9:30 AM – 3:30 PM in Tehran.

6 hours overlap

Chattogram

Asia/Dhaka

Tehran

Asia/Tehran

Availability

12:00 AM

Mon, Aug 17

9:30 PM

Previous day

Sun, Aug 16

Night

1:00 AM

Mon, Aug 17

10:30 PM

Previous day

Sun, Aug 16

Night

2:00 AM

Mon, Aug 17

11:30 PM

Previous day

Sun, Aug 16

Night

3:00 AM

Mon, Aug 17

12:30 AM

Mon, Aug 17

Night

4:00 AM

Mon, Aug 17

1:30 AM

Mon, Aug 17

Night

5:00 AM

Mon, Aug 17

2:30 AM

Mon, Aug 17

Night

6:00 AM

Mon, Aug 17

3:30 AM

Mon, Aug 17

Night

7:00 AM

Mon, Aug 17

4:30 AM

Mon, Aug 17

Night

8:00 AM

Mon, Aug 17

5:30 AM

Mon, Aug 17

Night

9:00 AM

Mon, Aug 17

6:30 AM

Mon, Aug 17

Night

10:00 AM

Mon, Aug 17

7:30 AM

Mon, Aug 17

Possible

11:00 AM

Mon, Aug 17

8:30 AM

Mon, Aug 17

Possible

12:00 PM

Mon, Aug 17

9:30 AM

Mon, Aug 17

Good overlap

1:00 PM

Mon, Aug 17

10:30 AM

Mon, Aug 17

Good overlap

2:00 PM

Mon, Aug 17

11:30 AM

Mon, Aug 17

Good overlap

3:00 PM

Mon, Aug 17

12:30 PM

Mon, Aug 17

Good overlap

4:00 PM

Mon, Aug 17

1:30 PM

Mon, Aug 17

Good overlap

5:00 PM

Mon, Aug 17

2:30 PM

Mon, Aug 17

Good overlap

6:00 PM

Mon, Aug 17

3:30 PM

Mon, Aug 17

Possible

7:00 PM

Mon, Aug 17

4:30 PM

Mon, Aug 17

Possible

8:00 PM

Mon, Aug 17

5:30 PM

Mon, Aug 17

Possible

9:00 PM

Mon, Aug 17

6:30 PM

Mon, Aug 17

Night

10:00 PM

Mon, Aug 17

7:30 PM

Mon, Aug 17

Night

11:00 PM

Mon, Aug 17

8:30 PM

Mon, Aug 17

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 Tehran from Chattogram

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

Chattogram

12:00 PM – 6:00 PM

Bangladesh

Best overlap

Tehran

9:30 AM – 3:30 PM

Iran

The best time to call Tehran from Chattogram is between 12:00 PM and 6:00 PM in Chattogram. This corresponds to 9:30 AM – 3:30 PM in Tehran.

Other reasonable windows

Chattogram

10:00 AM – 12:00 PM

Tehran

7:30 AM – 9:30 AM

Chattogram

6:00 PM – 9:00 PM

Tehran

3:30 PM – 6:30 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

Chattogram and Tehran time difference explained

Current local-time relationship

Tehran is currently 2 hours and 30 minutes behind Chattogram.

Chattogram uses Asia/Dhaka and currently has an offset of UTC+6. Tehran uses Asia/Tehran and currently has an offset of UTC+3:30.

Working-hours overlap

For a typical 9:00 AM–6:00 PM workday, the cities overlap from 11:30 AM to 6:00 PM in Chattogram, corresponding to 9:00 AM–3:30 PM in Tehran.

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 Chattogram and Tehran.

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Local clocks

Explore each city

Current time in Chattogram Current time in Tehran

FAQ

Chattogram to Tehran time difference FAQ

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

What is the time difference between Chattogram and Tehran?

The current time difference between Chattogram and Tehran is 2h 30m. Tehran is currently 2 hours and 30 minutes behind Chattogram.

Is Tehran ahead of or behind Chattogram?

Tehran is currently 2 hours and 30 minutes behind Chattogram.

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

Using the current UTC offsets, 9:00 AM in Chattogram corresponds to 6:30 AM in Tehran. The exact difference can change when daylight-saving rules change.

What is the best time to call Tehran from Chattogram?

Typical 9:00 AM–6:00 PM business hours overlap between 11:30 AM and 6:00 PM in Chattogram. This corresponds to 9:00 AM–3:30 PM in Tehran.

Can the time difference between Chattogram and Tehran change?

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