Buenos Aires to Key West, FL: time difference
Key West, FL is 1 h behind Buenos Aires. 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.
Buenos Aires 11:40 11:40 AM Key West, FL 10:40 10:40 AM You –:–
11:40 11:40 AM
Argentina Standard Time · UTC-3
☀️ 06:10 · 🌙 19:10
10:40 10:40 AM
Eastern Daylight Time · UTC-4
☀️ 07:27 · 🌙 19:00
·
−1 h
Key West, FL is 1 h behind Buenos Aires.
When you, Buenos Aires and Key West, FL 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
🇺🇸 Key West, FL
23 11 PM 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇦🇷 Buenos Aires | 🇺🇸 Key West, FL |
|---|---|---|
| Local time | 11:40 | 10:40 |
| Local date | Saturday, October 17, 2026 | Saturday, October 17, 2026 |
| Time zone | Argentina Standard Time | Eastern Daylight Time |
| UTC offset | UTC-3 | UTC-4 |
| Offset from Buenos Aires | — | −1 h |
| IANA zone | America/Argentina/Buenos Aires | America/New York |
| Daylight saving | Not observed | On summer time → UTC-5, Nov 1, 01:00 |
| Sunrise | 06:10 | 07:27 |
| Sunset | 19:10 | 19:00 |
| Daylight | 13 h | 11 h 33 min |
| People on this clock | 2,891,082 | 24,684 |
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 Key West, FL: common questions
How many hours behind Buenos Aires is Key West, FL?
The clocks in Key West are 1 hour behind those in Buenos Aires (UTC−4 and UTC−3).
If it is 9:00 AM in Buenos Aires, what time is it in Key West, FL?
At 9:00 AM in Buenos Aires, clocks in Key West show 8:00 AM.
What time is it in Key West, FL, when it is 6:00 PM in Buenos Aires?
When it is 6:00 PM in Buenos Aires, it is 5:00 PM in Key West.
When is a good time to call Key West, FL, from Buenos Aires?
Between 10:00 AM and 6:00 PM in Buenos Aires – that is 9:00 AM to 5:00 PM in Key West – both places are within working hours (9:00 AM–6:00 PM).
Until what time in Buenos Aires is it still yesterday in Key West, FL?
Before 1:00 AM in Buenos Aires, the date in Key West has not changed yet. From 11:00 PM in Key West, it is already the next day in Buenos Aires.
Is the time difference between Buenos Aires and Key West, FL, the same all year?
No. Only Key West switches to summer time, so the gap changes twice a year. From November 1, 2026, Key West will be 2 hours behind Buenos Aires.
