India Standard Time (ist) is used in India. The IANA timezone identifier is Asia/Kolkata.

Brasilia Time (brt) is used in Brazil. The IANA timezone identifier is America/Sao_Paulo.

IST to BRT Time Converter

India Standard Time → Brasilia Time

IST = UTC+5:30BRT = UTC-3

⚠️ IST is ambiguous — on this page it means India Standard Time. It also refers to:

Ireland Standard Time (Dublin) → BRT ↗Israel Standard Time (Jerusalem) → BRT ↗

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

BRT (São Paulo)

Brazil · -8.5h

00:30

London

United Kingdom · -4.5h

04:30

New York

USA · -9.5h

23:30-1 day

Tokyo

Japan · +3.5h

12:30

Dubai

United Arab Emirates · -1.5h

07:30

How far apart are IST (Mumbai) and BRT (São Paulo)?

IST (Mumbai) is 8 hours 30 minutes ahead of BRT (São Paulo). When IST (Mumbai) clocks hit noon, BRT (São Paulo) reads 03:00.

IST (Mumbai) runs on Asia/Kolkata; BRT (São Paulo) runs on America/Sao_Paulo. Together they are 8.5 hours 30 minutes apart.

Daily overlap window

There is no business hours overlap between IST (Mumbai) and BRT (São Paulo) during standard working hours (9:00–17:00). Meetings would require one party to work outside normal hours.

Best times to schedule a meeting

IST (Mumbai) and BRT (São Paulo) have no shared working window. These slots minimize out-of-hours disruption for both sides.

16:00 Mumbai / 07:00 São Paulo⚡ One side off-hours

⚠️ 2h before working hours in São Paulo

18:00 Mumbai / 09:00 São Paulo⚡ One side off-hours

⚠️ 2h after working hours in Mumbai

15:00 Mumbai / 06:00 São Paulo⚡ One side off-hours

⚠️ 3h before working hours in São Paulo

Working hours defined as 09:00–17:00 local time for each location.

Holiday calendar for both locations

IST (Mumbai)

No upcoming public holidays this year.

BRT (São Paulo)7 holidays

Jul 9Constitutionalist Revolution of 1932

Sep 7Independence Day

Oct 12Our Lady of Aparecida

Nov 2All Souls' Day

Nov 15Republic Proclamation Day

Working across IST (Mumbai) and BRT (São Paulo)

Coordinating between IST (Mumbai) (India) and BRT (São Paulo) (Brazil) means working around a 8.5-hour time difference. Since standard business hours don't naturally overlap, meetings usually require one side to shift slightly outside their normal working day.

💡 Best practice for cross-timezone meetings

⚡

A 16:00 meeting in IST (Mumbai) means 07:00 in BRT (São Paulo) (2h before working hours in São Paulo).

⚡

A 18:00 meeting in IST (Mumbai) means 09:00 in BRT (São Paulo) (2h after working hours in Mumbai).

⚡

A 15:00 meeting in IST (Mumbai) means 06:00 in BRT (São Paulo) (3h before working hours in São Paulo).

Since there is no natural overlap, the options above represent the most balanced compromise, minimizing out-of-hours inconvenience for both sides.

Avoid scheduling mistakes — especially around daylight saving changes. Use the ClockinSync Chrome Extension to instantly verify and compare both time zones directly in your browser, without manual calculations.

Add to your browser — Free →

Need a specific time? Use the slider or type directly into the input bar — it understands "3pm", "15:30", and location-specific formats like "9am IST (Mumbai)".

IST (Mumbai) ↔ BRT (São Paulo)

No overlap — one side will join outside working hours

IST (Mumbai)

BRT (São Paulo)