Nosara to Boulder, CO: time difference
Boulder, CO is 1 h behind Nosara. 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.
Nosara 22:53 10:53 PM Boulder, CO 21:53 9:53 PM You –:–
22:53 10:53 PM
Central Standard Time · UTC-6
☀️ 05:35 · 🌙 17:19
21:53 9:53 PM
Mountain Standard Time · UTC-7
☀️ 06:37 · 🌙 16:57
·
−1 h
Boulder, CO is 1 h behind Nosara.
When you, Nosara and Boulder, CO are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇨🇷 Nosara
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
🇺🇸 Boulder, CO
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 21 9 PM 22 10 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇨🇷 Nosara | 🇺🇸 Boulder, CO |
|---|---|---|
| Local time | 22:53 | 21:53 |
| Local date | Thursday, November 5, 2026 | Thursday, November 5, 2026 |
| Time zone | Central Standard Time | Mountain Standard Time |
| UTC offset | UTC-6 | UTC-7 |
| Offset from Nosara | — | −1 h |
| IANA zone | America/Costa Rica | America/Denver |
| Daylight saving | Not observed | On standard time → UTC-6, Mar 14, 03:00 |
| Sunrise | 05:35 | 06:37 |
| Sunset | 17:19 | 16:57 |
| Daylight | 11 h 44 min | 10 h 20 min |
| People on this clock | 4,912 | 106,803 |
Compare Nosara with another city
More comparisons with Nosara: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Nosara and Boulder, CO: common questions
How far behind Nosara is Boulder, CO?
Boulder is 1 hour behind Nosara: UTC−7 against UTC−6.
What time is it in Boulder, CO, when it is 9:00 AM in Nosara?
When it is 9:00 AM in Nosara, it is 8:00 AM in Boulder.
What time is it in Boulder, CO, at the end of the working day in Nosara?
The working day in Nosara ends at 6:00 PM; in Boulder it is 5:00 PM at that moment.
When is a good time to call Boulder, CO, from Nosara?
Between 10:00 AM and 6:00 PM in Nosara – that is 9:00 AM to 5:00 PM in Boulder – both places are within working hours (9:00 AM–6:00 PM).
When is it still the previous day in Boulder, CO?
Until 1:00 AM in Nosara it is still the previous day in Boulder. The other way round, from 11:00 PM in Boulder it is already the next day in Nosara.
Does the time difference between Nosara and Boulder, CO, change?
Yes. The clocks change only in Boulder. From March 14, 2027, Boulder and Nosara will have the same time.
