Groton, CT to Barcelona: time difference
Barcelona is 6 h ahead of Groton, CT. Live clocks for both, the working hours they share, and how each one sits against your own time.
🇪🇸 Barcelona, Spain
25
- Central European Summer Time
- UTC+2
- Golden hour
☀️ 08:09 · 🌙 19:05 · 10 h 56 min
+6 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Groton, CT 11:59 11:59 AM Barcelona 17:59 5:59 PM You –:–
11:59 11:59 AM
Eastern Daylight Time · UTC-4
☀️ 07:06 · 🌙 18:01
17:59 5:59 PM
Central European Summer Time · UTC+2
☀️ 08:09 · 🌙 19:05
·
+6 h
Barcelona is 6 h ahead of Groton, CT.
When you, Groton, CT and Barcelona are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇺🇸 Groton, CT
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
🇪🇸 Barcelona
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 4 4 AM 5 5 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇺🇸 Groton, CT | 🇪🇸 Barcelona |
|---|---|---|
| Local time | 11:59 | 17:59 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | Eastern Daylight Time | Central European Summer Time |
| UTC offset | UTC-4 | UTC+2 |
| Offset from Groton, CT | — | +6 h |
| IANA zone | America/New York | Europe/Madrid |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | On summer time → UTC+1, Oct 25, 02:00 |
| Sunrise | 07:06 | 08:09 |
| Sunset | 18:01 | 19:05 |
| Daylight | 10 h 55 min | 10 h 56 min |
| People on this clock | 40,115 | 1,660,122 |
Compare Groton, CT with another city
More comparisons with Groton, CT: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Groton, CT and Barcelona: common questions
What is the time difference between Groton, CT, and Barcelona?
Barcelona is 6 hours ahead: it uses UTC+2, while Groton is on UTC−4.
What time is it in Barcelona at the start of the working day in Groton, CT?
The working day in Groton starts at 9:00 AM; in Barcelona it is 3:00 PM at that moment.
What time is it in Barcelona when it is 6:00 PM in Groton, CT?
When it is 6:00 PM in Groton, it is 12:00 AM (the next day) in Barcelona.
When is a good time to call Barcelona from Groton, CT?
Between 9:00 AM and 12:00 PM in Groton – that is 3:00 PM to 6:00 PM in Barcelona – both places are within working hours (9:00 AM–6:00 PM).
From what time in Groton, CT, is it tomorrow in Barcelona?
Once it is 6:00 PM in Groton, the date in Barcelona has already changed. Until 6:00 AM in Barcelona, it is still the previous day in Groton.
Is the time difference between Groton, CT, and Barcelona the same all year?
No. Both places use summer time, but they switch on different dates, so for a while the gap changes. From October 25, 2026, Barcelona will be 5 hours ahead of Groton.
