Reykjavik to San Antonio: time difference
San Antonio 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 04:16 4:16 AM San Antonio 01:16 1:16 AM You –:–
04:16 4:16 AM
Greenwich Mean Time · UTC+0
☀️ 08:27 · 🌙 18:00
01:16 1:16 AM
Paraguay Summer Time · UTC-3
☀️ 06:14 · 🌙 18:58
·
−3 h
San Antonio is 3 h behind Reykjavik.
When you, Reykjavik and San Antonio 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 Antonio
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 Antonio |
|---|---|---|
| Local time | 04:16 | 01:16 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | Greenwich Mean Time | Paraguay Summer Time |
| UTC offset | UTC+0 | UTC-3 |
| Offset from Reykjavik | — | −3 h |
| IANA zone | Atlantic/Reykjavik | America/Asuncion |
| Daylight saving | Not observed | On summer time → UTC-4, Mar 27, 23:00 |
| Sunrise | 08:27 | 06:14 |
| Sunset | 18:00 | 18:58 |
| Daylight | 9 h 33 min | 12 h 44 min |
| People on this clock | 136,894 | 68,127 |
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 Antonio: common questions
How far behind Reykjavik is San Antonio?
San Antonio is 3 hours behind Reykjavik: UTC−3 against UTC+0.
What time is it in San Antonio at the start of the working day in Reykjavik?
The working day in Reykjavik starts at 9:00 AM; in San Antonio it is 6:00 AM at that moment.
If it is 6:00 PM in Reykjavik, what time is it in San Antonio?
At 6:00 PM in Reykjavik, clocks in San Antonio show 3:00 PM.
When do working hours in Reykjavik and in San Antonio overlap?
Working hours (9:00 AM–6:00 PM) overlap from 12:00 PM to 6:00 PM in Reykjavik, which is 9:00 AM to 3:00 PM in San Antonio.
When is it still the previous day in San Antonio?
Until 3:00 AM in Reykjavik it is still the previous day in San Antonio. The other way round, from 9:00 PM in San Antonio it is already the next day in Reykjavik.
Is the time difference between Reykjavik and San Antonio the same all year?
Yes. Neither Reykjavik nor San Antonio switches to summer time, so the gap is always 3 hours.
