Convert HST to BRT
BRT is 7 hours ahead of HST. HST is UTC−10 and BRT is UTC−3.
Right now: HST · BRT
Best time to schedule a meeting
Standard 9–5 working hours overlap for 1 hour: 9:00 AM–10:00 AM HST (4:00 PM–5:00 PM BRT). Schedule meetings inside that window.
| HST | BRT | Suitable? |
|---|---|---|
| 9:00 AM | 4:00 PM | working hours |
| 10:00 AM | 5:00 PM | outside 9–5 |
| 11:00 AM | 6:00 PM | outside 9–5 |
| 12:00 PM | 7:00 PM | outside 9–5 |
| 1:00 PM | 8:00 PM | outside 9–5 |
| 2:00 PM | 9:00 PM | outside 9–5 |
| 3:00 PM | 10:00 PM | outside 9–5 |
| 4:00 PM | 11:00 PM | outside 9–5 |
| 5:00 PM | 12:00 AM (next day) | outside 9–5 |
HST to BRT conversion table
| HST | BRT |
|---|---|
| 12:00 AM | 7:00 AM |
| 1:00 AM | 8:00 AM |
| 2:00 AM | 9:00 AM |
| 3:00 AM | 10:00 AM |
| 4:00 AM | 11:00 AM |
| 5:00 AM | 12:00 PM |
| 6:00 AM | 1:00 PM |
| 7:00 AM | 2:00 PM |
| 8:00 AM | 3:00 PM |
| 9:00 AM | 4:00 PM |
| 10:00 AM | 5:00 PM |
| 11:00 AM | 6:00 PM |
| 12:00 PM | 7:00 PM |
| 1:00 PM | 8:00 PM |
| 2:00 PM | 9:00 PM |
| 3:00 PM | 10:00 PM |
| 4:00 PM | 11:00 PM |
| 5:00 PM | 12:00 AM (next day) |
| 6:00 PM | 1:00 AM (next day) |
| 7:00 PM | 2:00 AM (next day) |
| 8:00 PM | 3:00 AM (next day) |
| 9:00 PM | 4:00 AM (next day) |
| 10:00 PM | 5:00 AM (next day) |
| 11:00 PM | 6:00 AM (next day) |
About HST
Hawaii Standard Time (HST) is UTC−10. It is used in Hawaii, which does not observe daylight saving at all.
About BRT
Brasília Time (BRT) is UTC−3. It is used in São Paulo, Rio de Janeiro and most of populated Brazil.
A warning about daylight saving
The abbreviations on this page each denote a single fixed offset, so every figure here is exact. What changes is which abbreviation a place uses. New York is on EST in January and EDT in July, so "New York time" moves by an hour twice a year while EST and EDT themselves never move. When you schedule across zones, name the city rather than the abbreviation, or use UTC — that is what calendar software does internally.
Frequently asked questions
What time is 9:00 AM HST in BRT?
9:00 AM HST is 4:00 PM BRT.
Is BRT ahead of HST?
BRT is 7 hours ahead of HST.
Which time zone does this use?
HST is UTC−10 and BRT is UTC−3. Both abbreviations denote a single fixed offset, so this conversion never shifts with daylight saving — what changes is which abbreviation a place is using at the time.