AST to BRT Converter
BRT is 1 hour ahead of AST
AST to BRT Conversion Table
Green rows indicate standard business hours (9 AM – 5 PM) in BRT
| AST | BRT |
|---|---|
| 12:00 AM | 1:00 AM |
| 1:00 AM | 2:00 AM |
| 2:00 AM | 3:00 AM |
| 3:00 AM | 4:00 AM |
| 4:00 AM | 5:00 AM |
| 5:00 AM | 6:00 AM |
| 6:00 AM | 7:00 AM |
| 7:00 AM | 8:00 AM |
| 8:00 AM | 9:00 AM |
| 9:00 AM | 10:00 AM |
| 10:00 AM | 11:00 AM |
| 11:00 AM | 12:00 PM |
| 12:00 PM | 1:00 PM |
| 1:00 PM | 2:00 PM |
| 2:00 PM | 3:00 PM |
| 3:00 PM | 4:00 PM |
| 4:00 PM | 5:00 PM |
| 5:00 PM | 6:00 PM |
| 6:00 PM | 7:00 PM |
| 7:00 PM | 8:00 PM |
| 8:00 PM | 9:00 PM |
| 9:00 PM | 10:00 PM |
| 10:00 PM | 11:00 PM |
| 11:00 PM | 12:00 AM +1d |
Converting Atlantic Standard Time to Brasilia Time
Atlantic Standard Time (AST) and Brasilia Time (BRT) are separated by a 1 hour time difference. BRT is 1 hour ahead of AST. AST is UTC-4, used in Canada, Puerto Rico, US Virgin Islands, while BRT is UTC-3, used in Brazil.
When converting from AST to BRT, the key reference points to remember are: 9:00 AM AST equals 10:00 AM BRT, 12:00 PM noon AST equals 1:00 PM BRT, and 5:00 PM AST equals 6:00 PM BRT. The conversion table above shows every hour of the day mapped between these two time zones.
Scheduling Across AST and BRT
For professionals scheduling meetings between AST and BRT, finding overlapping business hours is essential. Standard business hours are typically 9:00 AM to 5:00 PM in each time zone. Given the 1 hour difference, the window of overlap may be limited. Use the highlighted working hours in the conversion table above to quickly identify suitable meeting times.
Daylight Saving Time Considerations
AST observes Daylight Saving Time, switching to ADT (UTC-3) during summer months. BRT does not observe DST, staying at UTC-3 year-round. During DST transitions, the time difference between these zones may temporarily change by 1 hour. Always verify the current offset during spring and fall transition periods.