Reykjavik to San Isidro: time difference
San Isidro is 3 h behind Reykjavik. 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.
Reykjavik 16:52 4:52 PM San Isidro 13:52 1:52 PM You –:–
16:52 4:52 PM
Greenwich Mean Time · UTC+0
☀️ 08:24 · 🌙 18:04
13:52 1:52 PM
Argentina Standard Time · UTC-3
☀️ 06:10 · 🌙 19:10
·
−3 h
San Isidro is 3 h behind Reykjavik.
When you, Reykjavik and San Isidro are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇮🇸 Reykjavik
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
🇦🇷 San Isidro
21 9 PM 22 10 PM 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇮🇸 Reykjavik | 🇦🇷 San Isidro |
|---|---|---|
| Local time | 16:52 | 13:52 |
| Local date | Saturday, October 17, 2026 | Saturday, October 17, 2026 |
| Time zone | Greenwich Mean Time | Argentina Standard Time |
| UTC offset | UTC+0 | UTC-3 |
| Offset from Reykjavik | — | −3 h |
| IANA zone | Atlantic/Reykjavik | America/Argentina/Buenos Aires |
| Daylight saving | Not observed | Not observed |
| Sunrise | 08:24 | 06:10 |
| Sunset | 18:04 | 19:10 |
| Daylight | 9 h 40 min | 13 h |
| People on this clock | 136,894 | 45,190 |
Compare Reykjavik with another city
More comparisons with Reykjavik: the time zones next to it and the far side of the clock.
Big time differences
Reykjavik and San Isidro: common questions
How many hours behind Reykjavik is San Isidro?
The clocks in San Isidro are 3 hours behind those in Reykjavik (UTC−3 and UTC+0).
What time is it in San Isidro at the start of the working day in Reykjavik?
The working day in Reykjavik starts at 9:00 AM; in San Isidro it is 6:00 AM at that moment.
What time is it in San Isidro at the end of the working day in Reykjavik?
The working day in Reykjavik ends at 6:00 PM; in San Isidro it is 3:00 PM at that moment.
When is a good time to call San Isidro from Reykjavik?
Between 12:00 PM and 6:00 PM in Reykjavik – that is 9:00 AM to 3:00 PM in San Isidro – both places are within working hours (9:00 AM–6:00 PM).
When is it still the previous day in San Isidro?
Until 3:00 AM in Reykjavik it is still the previous day in San Isidro. The other way round, from 9:00 PM in San Isidro it is already the next day in Reykjavik.
Does the time difference between Reykjavik and San Isidro change?
No. Neither place uses daylight saving time, so the difference stays 3 hours all year.
