St.Catharines to Buenos Aires: time difference
Buenos Aires is 1 h ahead of St.Catharines. Live clocks for both, the working hours they share, and how each one sits against your own time.
+1 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
St.Catharines 02:01 2:01 AM Buenos Aires 03:01 3:01 AM You –:–
02:01 2:01 AM
Eastern Daylight Time · UTC-4
☀️ 07:38 · 🌙 18:26
03:01 3:01 AM
Argentina Standard Time · UTC-3
☀️ 06:05 · 🌙 19:13
·
+1 h
Buenos Aires is 1 h ahead of St.Catharines.
When you, St.Catharines 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
🇨🇦 St.Catharines
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 | 🇨🇦 St.Catharines | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 02:01 | 03:01 |
| Local date | Wednesday, October 21, 2026 | Wednesday, October 21, 2026 |
| Time zone | Eastern Daylight Time | Argentina Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from St.Catharines | — | +1 h |
| IANA zone | America/Toronto | America/Argentina/Buenos Aires |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | Not observed |
| Sunrise | 07:38 | 06:05 |
| Sunset | 18:26 | 19:13 |
| Daylight | 10 h 48 min | 13 h 8 min |
| People on this clock | 133,113 | 2,891,082 |
Compare St.Catharines with another city
More comparisons with St.Catharines: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
St.Catharines and Buenos Aires: common questions
How far ahead of St.Catharines is Buenos Aires?
Buenos Aires is 1 hour ahead of St.Catharines: UTC−3 against UTC−4.
What time is it in Buenos Aires at the start of the working day in St.Catharines?
The working day in St.Catharines 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 St.Catharines?
The working day in St.Catharines ends at 6:00 PM; in Buenos Aires it is 7:00 PM at that moment.
When is a good time to call Buenos Aires from St.Catharines?
Between 9:00 AM and 5:00 PM in St.Catharines – that is 10:00 AM to 6:00 PM in Buenos Aires – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Buenos Aires compared with St.Catharines?
The new day starts in Buenos Aires earlier: at 11:00 PM in St.Catharines it is already midnight there. Until 1:00 AM in Buenos Aires, St.Catharines is still on the previous day.
Is the time difference between St.Catharines and Buenos Aires the same all year?
No. Only St.Catharines switches to summer time, so the gap changes twice a year. From November 1, 2026, Buenos Aires will be 2 hours ahead of St.Catharines.
