Boulder, CO to Bansko: time difference
Bansko is 9 h ahead of Boulder, CO. Live clocks for both, the working hours they share, and how each one sits against your own time.
+9 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Boulder, CO 07:15 7:15 AM Bansko 16:15 4:15 PM You –:–
07:15 7:15 AM
Mountain Daylight Time · UTC-6
☀️ 07:19 · 🌙 18:17
16:15 4:15 PM
Eastern European Summer Time · UTC+3
☀️ 07:44 · 🌙 18:39
·
+9 h
Bansko is 9 h ahead of Boulder, CO.
When you, Boulder, CO and Bansko are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇺🇸 Boulder, 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
🇧🇬 Bansko
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 8 8 AM
📍 Your time
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Time zones side by side
| Detail | 🇺🇸 Boulder, CO | 🇧🇬 Bansko |
|---|---|---|
| Local time | 07:15 | 16:15 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | Mountain Daylight Time | Eastern European Summer Time |
| UTC offset | UTC-6 | UTC+3 |
| Offset from Boulder, CO | — | +9 h |
| IANA zone | America/Denver | Europe/Sofia |
| Daylight saving | On summer time → UTC-7, Nov 1, 01:00 | On summer time → UTC+2, Oct 25, 03:00 |
| Sunrise | 07:19 | 07:44 |
| Sunset | 18:17 | 18:39 |
| Daylight | 10 h 58 min | 10 h 55 min |
| People on this clock | 106,803 | 8,000 |
Compare Boulder, CO with another city
More comparisons with Boulder, CO: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Boulder, CO and Bansko: common questions
How far ahead of Boulder, CO, is Bansko?
Bansko is 9 hours ahead of Boulder: UTC+3 against UTC−6.
What time is it in Bansko at the start of the working day in Boulder, CO?
The working day in Boulder starts at 9:00 AM; in Bansko it is 6:00 PM at that moment.
If it is 6:00 PM in Boulder, CO, what time is it in Bansko?
At 6:00 PM in Boulder, clocks in Bansko show 3:00 AM (the next day).
When do working hours in Boulder, CO, and in Bansko overlap?
They don't: there are no shared working hours. The start of the day in Boulder (9:00 AM) is 6:00 PM in Bansko, and the start of the day in Bansko is 12:00 AM in Boulder.
From what time in Boulder, CO, is it tomorrow in Bansko?
Once it is 3:00 PM in Boulder, the date in Bansko has already changed. Until 9:00 AM in Bansko, it is still the previous day in Boulder.
Does the time gap between Boulder, CO, and Bansko change during the year?
Yes, because the clocks in Boulder and in Bansko change on different dates. Next change: from October 25, 2026, Bansko will be 8 hours ahead of Boulder.
