IST to BRT
Brasília Time is 8 hours 30 minutes behind India Standard Time, all year round.
IST to BRT conversion table
Every hour of the day, India Standard Time to Brasília Time. The gap never changes, so this table holds on every date.
| IST | BRT |
|---|---|
| 12:00 AM | 3:30 PM −1 day |
| 1:00 AM | 4:30 PM −1 day |
| 2:00 AM | 5:30 PM −1 day |
| 3:00 AM | 6:30 PM −1 day |
| 4:00 AM | 7:30 PM −1 day |
| 5:00 AM | 8:30 PM −1 day |
| 6:00 AM | 9:30 PM −1 day |
| 7:00 AM | 10:30 PM −1 day |
| 8:00 AM | 11:30 PM −1 day |
| 9:00 AM | 12:30 AM |
| 10:00 AM | 1:30 AM |
| 11:00 AM | 2:30 AM |
| IST | BRT |
|---|---|
| 12:00 PM | 3:30 AM |
| 1:00 PM | 4:30 AM |
| 2:00 PM | 5:30 AM |
| 3:00 PM | 6:30 AM |
| 4:00 PM | 7:30 AM |
| 5:00 PM | 8:30 AM |
| 6:00 PM | 9:30 AM |
| 7:00 PM | 10:30 AM |
| 8:00 PM | 11:30 AM |
| 9:00 PM | 12:30 PM |
| 10:00 PM | 1:30 PM |
| 11:00 PM | 2:30 PM |
Shared working hours
They do not overlap at all. A 09:00–17:00 working day in India Standard Time ends 30 minutes before the Brasília Time one begins, so any live call sits outside somebody's working hours.
The shortest reach is the edges: early morning in IST against late evening in BRT, or the other way round.
When the difference changes
It doesn't. Brasília Time is 8 hours 30 minutes behind India Standard Time on every date of the year. India Standard Time runs at UTC+05:30; Brasília Time runs at UTC-03:00.
About India Standard Time
India keeps one clock, UTC+5:30, across a country spanning about 29 degrees of longitude — the sun rises nearly two hours earlier in Arunachal Pradesh than in Gujarat on the same clock. The half-hour offset means most conversions from India land on the half hour rather than the hour. Sri Lanka keeps the same time.
Cities on this clock: Mumbai, Delhi, Bangalore, Hyderabad, Chennai, Kolkata, Pune, Ahmedabad.
Watch out: IST is also Israel Standard Time (UTC+2) and Irish Standard Time (UTC+1). This page is the Indian one.
About Brasília Time
Brazil abolished daylight saving in 2019, so Brasília Time has been a fixed UTC−3 ever since. Anything written before then — including a lot of still-published conversion tables — assumes a southern-hemisphere shift that no longer happens.
Cities on this clock: São Paulo, Rio de Janeiro, Brasília, Buenos Aires, Montevideo.
How the difference is worked out
Neither India Standard Time nor Brasília Time moves its clock relative to the other, so brasília time is 8 hours 30 minutes behind india standard time is a rule rather than a fact about one particular year. The hour-by-hour table above holds on every date.
With both zones on their own standard time — daylight saving not in force anywhere — Brasília Time is 8 hours 30 minutes behind India Standard Time. That figure never changes; everything else on this page follows from it plus whichever clocks have moved.
Every figure here comes from the IANA time zone database via your browser's own Intl engine, using the zone ids Asia/Kolkata and America/Sao_Paulo. Nothing is looked up on a server and nothing about your visit is recorded.
Is BRT ahead of or behind IST?
Brasília Time is 8 hours 30 minutes behind India Standard Time, all year round. India Standard Time runs at UTC+05:30; Brasília Time runs at UTC-03:00. Because neither zone changes its clock, the gap never moves.
What time is 9 AM IST in BRT?
9:00 AM IST is 12:30 AM BRT.
When can India Standard Time and Brasília Time meet?
They do not overlap. A 09:00–17:00 working day in India Standard Time ends 30 minutes before the Brasília Time one begins, so a call has to sit outside someone's working hours — early morning in India Standard Time or late evening in Brasília Time is usually the shortest reach.
What does IST stand for?
IST is India Standard Time, also written India time, Delhi time, Mumbai time. IST is also Israel Standard Time (UTC+2) and Irish Standard Time (UTC+1). This page is the Indian one.