BRT to AST Converter
AST is 1 hour behind BRT
BRT to AST Conversion Table
Green rows indicate standard business hours (9 AM – 5 PM) in AST
| BRT | AST |
|---|---|
| 12:00 AM | 11:00 PM -1d |
| 1:00 AM | 12:00 AM |
| 2:00 AM | 1:00 AM |
| 3:00 AM | 2:00 AM |
| 4:00 AM | 3:00 AM |
| 5:00 AM | 4:00 AM |
| 6:00 AM | 5:00 AM |
| 7:00 AM | 6:00 AM |
| 8:00 AM | 7:00 AM |
| 9:00 AM | 8:00 AM |
| 10:00 AM | 9:00 AM |
| 11:00 AM | 10:00 AM |
| 12:00 PM | 11:00 AM |
| 1:00 PM | 12:00 PM |
| 2:00 PM | 1:00 PM |
| 3:00 PM | 2:00 PM |
| 4:00 PM | 3:00 PM |
| 5:00 PM | 4:00 PM |
| 6:00 PM | 5:00 PM |
| 7:00 PM | 6:00 PM |
| 8:00 PM | 7:00 PM |
| 9:00 PM | 8:00 PM |
| 10:00 PM | 9:00 PM |
| 11:00 PM | 10:00 PM |
Converting Brasilia Time to Atlantic Standard Time
Brasilia Time (BRT) and Atlantic Standard Time (AST) are separated by a 1 hour time difference. AST is 1 hour behind BRT. BRT is UTC-3, used in Brazil, while AST is UTC-4, used in Canada, Puerto Rico, US Virgin Islands.
When converting from BRT to AST, the key reference points to remember are: 9:00 AM BRT equals 8:00 AM AST, 12:00 PM noon BRT equals 11:00 AM AST, and 5:00 PM BRT equals 4:00 PM AST. The conversion table above shows every hour of the day mapped between these two time zones.
Scheduling Across BRT and AST
For professionals scheduling meetings between BRT and AST, 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
BRT does not observe Daylight Saving Time, maintaining UTC-3 year-round. AST observes DST, switching to ADT (UTC-3). 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.