Toronto zone
EDT (GMT-4)
Buenos Aires zone
GMT-3 (GMT-3)
Difference
1 hour ahead of Toronto
Business overlap
7h (9-5 windows)
Working hours overlap
Each cell is one hour in Toronto. Filled cells mark when 9 AM – 5 PM in Toronto and Buenos Aires both apply.
7 hours per day
- Toronto
- GMT-4
- Buenos Aires
- GMT-3
- Difference
- +1h
- Business overlap
- 7h
Hour-by-hour conversion
Each row shows the matching local time in Buenos Aires for an hour in Toronto.
| Toronto | Buenos Aires | Day | Window |
|---|---|---|---|
| 12:00 AM | 1:00 AM | same day | — |
| 1:00 AM | 2:00 AM | same day | — |
| 2:00 AM | 3:00 AM | same day | — |
| 3:00 AM | 4:00 AM | same day | — |
| 4:00 AM | 5:00 AM | same day | — |
| 5:00 AM | 6:00 AM | same day | — |
| 6:00 AM | 7:00 AM | same day | — |
| 7:00 AM | 8:00 AM | same day | — |
| 8:00 AM | 9:00 AM | same day | — |
| 9:00 AM | 10:00 AM | same day | Both 9-5 |
| 10:00 AM | 11:00 AM | same day | Both 9-5 |
| 11:00 AM | 12:00 PM | same day | Both 9-5 |
| 12:00 PM | 1:00 PM | same day | Both 9-5 |
| 1:00 PM | 2:00 PM | same day | Both 9-5 |
| 2:00 PM | 3:00 PM | same day | Both 9-5 |
| 3:00 PM | 4:00 PM | same day | Both 9-5 |
| 4:00 PM | 5:00 PM | same day | — |
| 5:00 PM | 6:00 PM | same day | — |
| 6:00 PM | 7:00 PM | same day | — |
| 7:00 PM | 8:00 PM | same day | — |
| 8:00 PM | 9:00 PM | same day | — |
| 9:00 PM | 10:00 PM | same day | — |
| 10:00 PM | 11:00 PM | same day | — |
| 11:00 PM | 12:00 AM | next day | — |
Best meeting windows
If both teams keep standard 9 AM – 5 PM hours, the overlap window is roughly 9:00 AM – 4:00 PM in Toronto time. That gives you 7 hours per workday for live meetings.
Tighter overlap is achievable by having the side with later working hours start earlier, or by treating the first and last hours of each side as flexible. The bar above marks every hour where both cities sit inside a 9 AM – 5 PM window.
About converting Toronto time to Buenos Aires time
Toronto follows the America/Toronto time zone (currently EDT, GMT-4), while Buenos Aires follows America/Argentina/Buenos_Aires (currently GMT-3, GMT-3). Buenos Aires is 1 hour ahead of Toronto right now.
Toronto observes daylight saving time, while Buenos Aires does not. The offset between the two cities changes by one hour at the daylight saving transitions.
Daylight saving transitions in 2026
Toronto
- Spring forward · Sunday, March 8, 2026
- Fall back · Sunday, November 1, 2026
Buenos Aires
Does not observe daylight saving time.
Reverse this conversion
Buenos Aires to Toronto
Open the converter
Plan a meeting between Toronto and Buenos Aires
More conversions from Toronto
Frequently asked questions
- How many hours is Toronto from Buenos Aires?
- Buenos Aires is 1 hour ahead of Toronto right now.
- What time is 9:00 AM Toronto in Buenos Aires?
- 9:00 AM in Toronto is 10:00 AM in Buenos Aires.
- What time is 5:00 PM Toronto in Buenos Aires?
- 5:00 PM in Toronto is 6:00 PM in Buenos Aires.
- When do Toronto and Buenos Aires business hours overlap?
- Standard 9 AM - 5 PM working hours overlap for about 7 hours, roughly from 9:00 AM to 4:00 PM in Toronto time.
- Does daylight saving time change the difference between Toronto and Buenos Aires?
- Toronto observes daylight saving time while Buenos Aires does not, so the offset between them changes by one hour twice a year.
Local time page
Time in Toronto
Local time page
Time in Buenos Aires