🇦🇷 Buenos Aires, Argentina
00
- Argentina Standard Time
- UTC-3
- Daytime
☀️ 06:19 · 🌙 19:04 · 12 h 45 min
Buenos Aires to Sao Tome: time difference
Sao Tome is 3 h ahead of Buenos Aires. Live clocks for both, the working hours they share, and how each one sits against your own time.
🇸🇹 Sao Tome, Sao Tome and Principe
00
- Greenwich Mean Time
- UTC+0
- Daytime
☀️ 05:18 · 🌙 17:24 · 12 h 6 min
+3 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Buenos Aires 09:40 9:40 AM Sao Tome 12:40 12:40 PM You –:–
09:40 9:40 AM
Argentina Standard Time · UTC-3
☀️ 06:19 · 🌙 19:04
12:40 12:40 PM
Greenwich Mean Time · UTC+0
☀️ 05:18 · 🌙 17:24
·
+3 h
Sao Tome is 3 h ahead of Buenos Aires.
When you, Buenos Aires and Sao Tome 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
🇸🇹 Sao Tome
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 1 1 AM 2 2 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇦🇷 Buenos Aires | 🇸🇹 Sao Tome |
|---|---|---|
| Local time | 09:40 | 12:40 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Argentina Standard Time | Greenwich Mean Time |
| UTC offset | UTC-3 | UTC+0 |
| Offset from Buenos Aires | — | +3 h |
| IANA zone | America/Argentina/Buenos Aires | Africa/Sao Tome |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:19 | 05:18 |
| Sunset | 19:04 | 17:24 |
| Daylight | 12 h 45 min | 12 h 6 min |
| People on this clock | 2,891,082 | 53,300 |
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 Sao Tome: common questions
How far ahead of Buenos Aires is Sao Tome?
Sao Tome is 3 hours ahead of Buenos Aires: UTC+0 against UTC−3.
If it is 9:00 AM in Buenos Aires, what time is it in Sao Tome?
At 9:00 AM in Buenos Aires, clocks in Sao Tome show 12:00 PM.
What time is it in Sao Tome at the end of the working day in Buenos Aires?
The working day in Buenos Aires ends at 6:00 PM; in Sao Tome it is 9:00 PM at that moment.
When do working hours in Buenos Aires and in Sao Tome overlap?
Working hours (9:00 AM–6:00 PM) overlap from 9:00 AM to 3:00 PM in Buenos Aires, which is 12:00 PM to 6:00 PM in Sao Tome.
When is it already the next day in Sao Tome?
From 9:00 PM in Buenos Aires it is already the next day in Sao Tome. The other way round, until 3:00 AM in Sao Tome it is still the previous day in Buenos Aires.
Is the time difference between Buenos Aires and Sao Tome the same all year?
Yes. Neither Buenos Aires nor Sao Tome switches to summer time, so the gap is always 3 hours.
