ADT to BRST Converter
BRST is not used on this date.
This converter uses BRT (UTC−3), as in Sao Paulo.
Quick answers
Selected conversion
9:00 am09:00 ADT (UTC-3), Oct 11, 2026 = 9:00 am09:00 BRT (UTC-3), Oct 11, 2026
ADT and BRT have the same local time.
ADT and BRST examples
These examples always use ADT (UTC-3) and BRST (UTC-2). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
ADT is 1 hour behind BRST.
How the time difference changes
For most of the year, ADT and BRT have the same time. At other times of the year, AST is 1 hour behind BRT.
For most of the year, working hours of 9:00 am to 5:00 pm in ADT correspond to 9:00 am to 5:00 pm in BRT. At other times of the year, working hours of 9:00 am to 5:00 pm in AST correspond to 10:00 am to 6:00 pm in BRT.For most of the year, working hours of 09:00 to 17:00 in ADT correspond to 09:00 to 17:00 in BRT. At other times of the year, working hours of 09:00 to 17:00 in AST correspond to 10:00 to 18:00 in BRT.
Compare ADT time with BRST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Atlantic Daylight Time and Brasília time have the same local time.
9:00 am09:00 in ADT is 9:00 am09:00 in BRT
ADT to BRT call time
Best time for a conference call or a meeting is between 9am-5pm09:00-17:00 in ADT which corresponds to 9am-5pm09:00-17:00 in BRT
9:00 am09:00 Atlantic Daylight Time (ADT). Offset UTC -3:00 hours
9:00 am09:00 Brasília time (BRT). Offset UTC -3:00 hours
9:00 am09:00 ADT / 9:00 am09:00 BRT
| ADT | BRT |
|---|---|
| 12:00am | 12:00am |
| 1:00am | 1:00am |
| 2:00am | 2:00am |
| 3:00am | 3:00am |
| 4:00am | 4:00am |
| 5:00am | 5:00am |
| 6:00am | 6:00am |
| 7:00am | 7:00am |
| 8:00am | 8:00am |
| 9:00am | 9:00am |
| 10:00am | 10:00am |
| 11:00am | 11:00am |
| 12:00pm | 12:00pm |
| 1:00pm | 1:00pm |
| 2:00pm | 2:00pm |
| 3:00pm | 3:00pm |
| 4:00pm | 4:00pm |
| 5:00pm | 5:00pm |
| 6:00pm | 6:00pm |
| 7:00pm | 7:00pm |
| 8:00pm | 8:00pm |
| 9:00pm | 9:00pm |
| 10:00pm | 10:00pm |
| 11:00pm | 11:00pm |
| 00:00 | 00:00 |
| 01:00 | 01:00 |
| 02:00 | 02:00 |
| 03:00 | 03:00 |
| 04:00 | 04:00 |
| 05:00 | 05:00 |
| 06:00 | 06:00 |
| 07:00 | 07:00 |
| 08:00 | 08:00 |
| 09:00 | 09:00 |
| 10:00 | 10:00 |
| 11:00 | 11:00 |
| 12:00 | 12:00 |
| 13:00 | 13:00 |
| 14:00 | 14:00 |
| 15:00 | 15:00 |
| 16:00 | 16:00 |
| 17:00 | 17:00 |
| 18:00 | 18:00 |
| 19:00 | 19:00 |
| 20:00 | 20:00 |
| 21:00 | 21:00 |
| 22:00 | 22:00 |
| 23:00 | 23:00 |
Atlantic Daylight Time
Offset: ADT is 3 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries using this time zone: Bermuda, Canada, Greenland
Principal Cities: The largest city in the ADT time zone is Halifax in Canada, with about 471,559 people. Other major cities in this time zone include Sydney, Dartmouth, Moncton, Saint John.
French: HAA - Heure Avancée de l'Atlantique
Daylight Saving: Atlantic Daylight Time (ADT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Atlantic Standard Time (AST).
Start: Atlantic Daylight Time (ADT) started on Sunday, March 8, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am03:00. Daylight saving starts annually on the second Sunday of March.
End: Atlantic Daylight Time (ADT) ends on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2026, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the first Sunday of November.
ADT representations, usage and related time zones
- -03 - basic short
- -0300 - basic
- -03:00 - extended
- -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.
- Papa - Military abbreviation for ADT
- P - short form of 'Papa'
- America/Glace_Bay
- America/Goose_Bay
- America/Halifax
- America/Moncton
- America/Thule
- Atlantic/Bermuda
- Canada/Atlantic
- ADT - Atlantic Daylight Time
- PMT - Pierre & Miquelon Standard Time
- PMST - Pierre & Miquelon Standard Time
- AMST - Amazon Summer Time
- ART - Argentina Time
- BRT - Brasília time
- CLST - Chile Summer Time
- FKST - Falkland Islands Summer Time
- GFT - French Guiana Time
- P - Papa Time Zone
- PYST - Paraguay Summer Time
- SRT - Suriname Time
- UYT - Uruguay Time
Brasilia Summer Time
Offset: BRST is 2 hours behind Greenwich Mean Time (GMT) and is used in South America
BRST representations, usage and related time zones
- -02 - basic short
- -0200 - basic
- -02:00 - extended
- -0200 - sign character (-) followed by a four digit time providing hours (02) and minutes (00) of the offset. Indicates an offset of two hours to the west of the zero meridian.
- Oscar - Military abbreviation for BRST
- O - short form of 'Oscar'
- PMDT - Pierre & Miquelon Daylight Time
- WGT - West Greenland Time
- BRST - Brasilia Summer Time
- FNT - Fernando de Noronha Time
- O - Oscar Time Zone
- UYST - Uruguay Summer Time