Time Difference

Rio de Janeiro vs Kolkata Time Difference

Compare the current local time in Rio de Janeiro, Brazil and Kolkata, India.

Live local timeDST awareUTC offsets

From

Rio de Janeiro

Brazil

7:46 PM

Sun, Aug 16

UTC-3America/Sao_Paulo

Difference

8h 30m

Swap

Kolkata

India

4:16 AM

Mon, Aug 17

UTC+5:30Asia/Kolkata

Current difference

Kolkata is currently 8 hours 30 minutes ahead of Rio de Janeiro.

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

24-hour comparison

Compare Rio de Janeiro and Kolkata hour by hour

See how a full local day in Rio de Janeiro, Brazil maps to Kolkata, India. TimeInOne automatically accounts for timezone offsets, date changes and daylight-saving transitions.

24-hour day

Best working-hours overlap

9:00 AM – 10:00 AM in Rio de Janeiro

corresponds to 5:30 PM – 6:30 PM in Kolkata.

1 hour overlap

Rio de Janeiro

America/Sao_Paulo

Kolkata

Asia/Kolkata

Availability

12:00 AM

Sun, Aug 16

8:30 AM

Sun, Aug 16

Night

1:00 AM

Sun, Aug 16

9:30 AM

Sun, Aug 16

Night

2:00 AM

Sun, Aug 16

10:30 AM

Sun, Aug 16

Night

3:00 AM

Sun, Aug 16

11:30 AM

Sun, Aug 16

Night

4:00 AM

Sun, Aug 16

12:30 PM

Sun, Aug 16

Night

5:00 AM

Sun, Aug 16

1:30 PM

Sun, Aug 16

Night

6:00 AM

Sun, Aug 16

2:30 PM

Sun, Aug 16

Night

7:00 AM

Sun, Aug 16

3:30 PM

Sun, Aug 16

Possible

8:00 AM

Sun, Aug 16

4:30 PM

Sun, Aug 16

Possible

9:00 AM

Sun, Aug 16

5:30 PM

Sun, Aug 16

Good overlap

10:00 AM

Sun, Aug 16

6:30 PM

Sun, Aug 16

Possible

11:00 AM

Sun, Aug 16

7:30 PM

Sun, Aug 16

Possible

12:00 PM

Sun, Aug 16

8:30 PM

Sun, Aug 16

Possible

1:00 PM

Sun, Aug 16

9:30 PM

Sun, Aug 16

Night

2:00 PM

Sun, Aug 16

10:30 PM

Sun, Aug 16

Night

3:00 PM

Sun, Aug 16

11:30 PM

Sun, Aug 16

Night

4:00 PM

Sun, Aug 16

12:30 AM

Next day

Mon, Aug 17

Night

5:00 PM

Sun, Aug 16

1:30 AM

Next day

Mon, Aug 17

Night

6:00 PM

Sun, Aug 16

2:30 AM

Next day

Mon, Aug 17

Night

7:00 PM

Sun, Aug 16

3:30 AM

Next day

Mon, Aug 17

Night

8:00 PM

Sun, Aug 16

4:30 AM

Next day

Mon, Aug 17

Night

9:00 PM

Sun, Aug 16

5:30 AM

Next day

Mon, Aug 17

Night

10:00 PM

Sun, Aug 16

6:30 AM

Next day

Mon, Aug 17

Night

11:00 PM

Sun, Aug 16

7:30 AM

Next day

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 Kolkata from Rio de Janeiro

Compare typical business hours in Rio de Janeiro, Brazil and Kolkata, India to find a practical time for calls, meetings or international coordination.

Rio de Janeiro

9:00 AM – 10:00 AM

Brazil

Best overlap

Kolkata

5:30 PM – 6:30 PM

India

The best time to call Kolkata from Rio de Janeiro is between 9:00 AM and 10:00 AM in Rio de Janeiro. This corresponds to 5:30 PM – 6:30 PM in Kolkata.

Other reasonable windows

Rio de Janeiro

7:00 AM – 9:00 AM

Kolkata

3:30 PM – 5:30 PM

Rio de Janeiro

10:00 AM – 1:00 PM

Kolkata

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

Rio de Janeiro and Kolkata time difference explained

Current local-time relationship

Kolkata is currently 8 hours and 30 minutes ahead of Rio de Janeiro.

Rio de Janeiro uses America/Sao_Paulo and currently has an offset of UTC-3. Kolkata 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 9:30 AM in Rio de Janeiro, corresponding to 5:30 PM–6:00 PM in Kolkata.

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 Rio de Janeiro and Kolkata.

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Local clocks

Explore each city

Current time in Rio de Janeiro Current time in Kolkata

FAQ

Rio de Janeiro to Kolkata time difference FAQ

Common questions about the current time difference, UTC offsets, daylight-saving changes and practical calling hours between Rio de Janeiro and Kolkata.

What is the time difference between Rio de Janeiro and Kolkata?

The current time difference between Rio de Janeiro and Kolkata is 8h 30m. Kolkata is currently 8 hours and 30 minutes ahead of Rio de Janeiro.

Is Kolkata ahead of or behind Rio de Janeiro?

Kolkata is currently 8 hours and 30 minutes ahead of Rio de Janeiro.

What time is it in Kolkata when it is 9:00 AM in Rio de Janeiro?

Using the current UTC offsets, 9:00 AM in Rio de Janeiro corresponds to 5:30 PM in Kolkata. The exact difference can change when daylight-saving rules change.

What is the best time to call Kolkata from Rio de Janeiro?

Typical 9:00 AM–6:00 PM business hours overlap between 9:00 AM and 9:30 AM in Rio de Janeiro. This corresponds to 5:30 PM–6:00 PM in Kolkata.

Can the time difference between Rio de Janeiro and Kolkata change?

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