Castle Rock, CO to Barcelona: time difference
Barcelona is 8 h ahead of Castle Rock, CO. Live clocks for both, the working hours they share, and how each one sits against your own time.
+8 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Castle Rock, CO 12:17 12:17 PM Barcelona 20:17 8:17 PM You –:–
12:17 12:17 PM
Mountain Daylight Time · UTC-6
☀️ 07:05 · 🌙 18:29
20:17 8:17 PM
Central European Summer Time · UTC+2
☀️ 07:58 · 🌙 19:20
·
+8 h
Barcelona is 8 h ahead of Castle Rock, CO.
When you, Castle Rock, CO 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
🇺🇸 Castle Rock, CO
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
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 6 6 AM 7 7 AM
📍 Your time
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Time zones side by side
| Detail | 🇺🇸 Castle Rock, CO | 🇪🇸 Barcelona |
|---|---|---|
| Local time | 12:17 | 20:17 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Mountain Daylight Time | Central European Summer Time |
| UTC offset | UTC-6 | UTC+2 |
| Offset from Castle Rock, CO | — | +8 h |
| IANA zone | America/Denver | Europe/Madrid |
| Daylight saving | On summer time → UTC-7, Nov 1, 01:00 | On summer time → UTC+1, Oct 25, 02:00 |
| Sunrise | 07:05 | 07:58 |
| Sunset | 18:29 | 19:20 |
| Daylight | 11 h 25 min | 11 h 22 min |
| People on this clock | 73,158 | 1,660,122 |
Compare Castle Rock, CO with another city
More comparisons with Castle Rock, CO: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Castle Rock, CO and Barcelona: common questions
What is the time difference between Castle Rock, CO, and Barcelona?
Barcelona is 8 hours ahead: it uses UTC+2, while Castle Rock is on UTC−6.
What time is it in Barcelona when it is 9:00 AM in Castle Rock, CO?
When it is 9:00 AM in Castle Rock, it is 5:00 PM in Barcelona.
What time is it in Barcelona when it is 6:00 PM in Castle Rock, CO?
When it is 6:00 PM in Castle Rock, it is 2:00 AM (the next day) in Barcelona.
When do working hours in Castle Rock, CO, and in Barcelona overlap?
Working hours (9:00 AM–6:00 PM) overlap from 9:00 AM to 10:00 AM in Castle Rock, which is 5:00 PM to 6:00 PM in Barcelona.
From what time in Castle Rock, CO, is it tomorrow in Barcelona?
Once it is 4:00 PM in Castle Rock, the date in Barcelona has already changed. Until 8:00 AM in Barcelona, it is still the previous day in Castle Rock.
Does the time difference between Castle Rock, CO, and Barcelona change?
Yes. Both places change their clocks, but on different dates. From October 25, 2026, Barcelona will be 7 hours ahead of Castle Rock.
