Longueuil to Buenos Aires: time difference
Buenos Aires is 1 h ahead of Longueuil. Live clocks for both, the working hours they share, and how each one sits against your own time.
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Longueuil 20:03 8:03 PM Buenos Aires 21:03 9:03 PM You –:–
20:03 8:03 PM
Eastern Daylight Time · UTC-4
☀️ 07:13 · 🌙 18:06
21:03 9:03 PM
Argentina Standard Time · UTC-3
☀️ 06:10 · 🌙 19:10
·
+1 h
Buenos Aires is 1 h ahead of Longueuil.
When you, Longueuil and Buenos Aires are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇨🇦 Longueuil
0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM
🇦🇷 Buenos Aires
1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM 0 12 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇨🇦 Longueuil | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 20:03 | 21:03 |
| Local date | Saturday, October 17, 2026 | Saturday, October 17, 2026 |
| Time zone | Eastern Daylight Time | Argentina Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Longueuil | — | +1 h |
| IANA zone | America/Toronto | America/Argentina/Buenos Aires |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | Not observed |
| Sunrise | 07:13 | 06:10 |
| Sunset | 18:06 | 19:10 |
| Daylight | 10 h 53 min | 13 h |
| People on this clock | 254,483 | 2,891,082 |
Compare Longueuil with another city
More comparisons with Longueuil: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Longueuil and Buenos Aires: common questions
How many hours ahead of Longueuil is Buenos Aires?
The clocks in Buenos Aires are 1 hour ahead of those in Longueuil (UTC−3 and UTC−4).
What time is it in Buenos Aires at the start of the working day in Longueuil?
The working day in Longueuil starts at 9:00 AM; in Buenos Aires it is 10:00 AM at that moment.
What time is it in Buenos Aires at the end of the working day in Longueuil?
The working day in Longueuil ends at 6:00 PM; in Buenos Aires it is 7:00 PM at that moment.
Is there a time when both Longueuil and Buenos Aires are at work?
Yes: from 9:00 AM to 5:00 PM in Longueuil (10:00 AM to 6:00 PM in Buenos Aires), the working days (9:00 AM–6:00 PM) overlap.
From what time in Longueuil is it tomorrow in Buenos Aires?
Once it is 11:00 PM in Longueuil, the date in Buenos Aires has already changed. Until 1:00 AM in Buenos Aires, it is still the previous day in Longueuil.
Does the time difference between Longueuil and Buenos Aires change?
Yes. The clocks change only in Longueuil. From November 1, 2026, Buenos Aires will be 2 hours ahead of Longueuil.
