IST to BRT Converter

Updating current time…
IST
India Standard Time
UTC+5:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm
BRT
Brasilia Time
UTC−3
8h 30m behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

5:30 pm17:30 IST (UTC+5:30), Oct 18, 2026 = 9:00 am09:00 BRT (UTC-3), Oct 18, 2026

IST is 8 hours and 30 minutes ahead of BRT.

IST and BRT examples

These examples always use IST (UTC+5:30) and BRT (UTC-3). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

IST is 8 hours and 30 minutes ahead of BRT.

How the time difference changes

IST is 8 hours and 30 minutes ahead of BRT year-round.

Working hours of 9:00 am to 6:00 pm in IST correspond to 12:30 am to 9:30 am in BRT.Working hours of 09:00 to 18:00 in IST correspond to 00:30 to 09:30 in BRT.

Compare IST time with BRT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

India Standard Time is 8 hours and 30 minutes ahead of Brasilia Time.
5:30 pm17:30 in IST is 9:00 am09:00 in BRT

IST to BRT call time
Best time for a conference call or a meeting is between 5:30pm-6pm17:30-18:00 in IST which corresponds to 9am-9:30am09:00-09:30 in BRT

5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours
9:00 am09:00 Brasilia Time (BRT). Offset UTC -3:00 hours

5:30 pm17:30 IST / 9:00 am09:00 BRT

Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.

Hourly time comparison
ISTBRT
3:30pm previous day
4:30pm previous day
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15:30 previous day
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23:30 previous day
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India Standard Time

Offset: IST is 5 hours and 30 minutes ahead of Greenwich Mean Time (GMT).

Countries using this time zone: India

Principal Cities: The largest city in the IST time zone is Mumbai in India, with about 12.692 million people. Other major cities in this time zone include Delhi, Bengaluru, Hyderabad, Ahmedabad.

Daylight Saving: Clocks in India Standard Time (IST) do not change for daylight saving time, so IST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.

Current time in India: India time now

Map of the areas on India Standard Time (IST)
IST all year

Open the world time zone map© OpenStreetMap

IST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +0530 - basic
  • +05:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0530 - sign character (+) followed by a four digit time providing hours (05) and minutes (30) of the offset. Indicates an offset of five hours and thirty minutes to the east of the zero meridian.
IANA/Olson: Reflects IST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Calcutta
  • Asia/Kolkata
IST Abbreviation: Several time zones share IST abbreviation and it could refer to these time zones
  • India Standard Time - UTC +5:30
  • Irish Standard Time - UTC +1
  • Israel Standard Time - UTC +2

Brasilia Time

Offset: BRT is 3 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Brazil

Principal Cities: The largest city in the BRT time zone is São Paulo in Brazil, with about 12.4 million people. Other major cities in this time zone include Rio de Janeiro, Belo Horizonte, Salvador, Fortaleza.

Daylight Saving: Clocks in Brasilia Time (BRT) do not change for daylight saving time, so BRT stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.

Map of the areas on Brasilia Time (BRT)
BRT all year

Open the world time zone map© OpenStreetMap

BRT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -03 - basic short
  • -0300 - basic
  • -03:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0300 - sign character (-) followed by a four digit time providing hours (03) and minutes (00) of the offset. Indicates an offset of three hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Papa - Military abbreviation for BRT
  • P - short form of 'Papa'
Time zones with the GMT -3 offset:
  • ADT - Atlantic Daylight Time
  • PMT - Pierre & Miquelon Standard Time
  • PMST - Pierre & Miquelon Standard Time
  • AMST - Amazon Summer Time
  • ART - Argentina Time
  • BRT - Brasilia Time
  • CLST - Chile Summer Time
  • FKST - Falkland Islands Summer Time
  • FKT - Falkland Islands Time
  • GFT - French Guiana Time
  • P - Papa Time Zone
  • PYST - Paraguay Summer Time
  • PYT - Paraguay Time
  • SRT - Suriname Time
  • UYT - Uruguay Time
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT