Buenos Aires to Chatham: time difference
Chatham is 4 h ahead of Buenos Aires. Live clocks for both, the working hours they share, and how each one sits against your own time.
🇬🇧 Chatham, United Kingdom
46
- British Summer Time
- UTC+1
- Golden hour
☀️ 07:27 · 🌙 18:01 · 10 h 34 min
+4 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Buenos Aires 04:35 4:35 AM Chatham 08:35 8:35 AM You –:–
04:35 4:35 AM
Argentina Standard Time · UTC-3
☀️ 06:09 · 🌙 19:11
08:35 8:35 AM
British Summer Time · UTC+1
☀️ 07:27 · 🌙 18:01
·
+4 h
Chatham is 4 h ahead of Buenos Aires.
When you, Buenos Aires and Chatham are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇦🇷 Buenos Aires
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
🇬🇧 Chatham
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 1 1 AM 2 2 AM 3 3 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇦🇷 Buenos Aires | 🇬🇧 Chatham |
|---|---|---|
| Local time | 04:35 | 08:35 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | Argentina Standard Time | British Summer Time |
| UTC offset | UTC-3 | UTC+1 |
| Offset from Buenos Aires | — | +4 h |
| IANA zone | America/Argentina/Buenos Aires | Europe/London |
| Daylight saving | Not observed | On summer time → UTC+0, Oct 25, 01:00 |
| Sunrise | 06:09 | 07:27 |
| Sunset | 19:11 | 18:01 |
| Daylight | 13 h 2 min | 10 h 34 min |
| People on this clock | 2,891,082 | 76,792 |
Compare Buenos Aires with another city
More comparisons with Buenos Aires: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Buenos Aires and Chatham: common questions
How many hours ahead of Buenos Aires is Chatham?
The clocks in Chatham are 4 hours ahead of those in Buenos Aires (UTC+1 and UTC−3).
If it is 9:00 AM in Buenos Aires, what time is it in Chatham?
At 9:00 AM in Buenos Aires, clocks in Chatham show 1:00 PM.
What time is it in Chatham at the end of the working day in Buenos Aires?
The working day in Buenos Aires ends at 6:00 PM; in Chatham it is 10:00 PM at that moment.
When is a good time to call Chatham from Buenos Aires?
Between 9:00 AM and 2:00 PM in Buenos Aires – that is 1:00 PM to 6:00 PM in Chatham – both places are within working hours (9:00 AM–6:00 PM).
When is it already the next day in Chatham?
From 8:00 PM in Buenos Aires it is already the next day in Chatham. The other way round, until 4:00 AM in Chatham it is still the previous day in Buenos Aires.
Is the time difference between Buenos Aires and Chatham the same all year?
No. Only Chatham switches to summer time, so the gap changes twice a year. From October 25, 2026, Chatham will be 3 hours ahead of Buenos Aires.
