Guyancourt to Sofia: time difference
Sofia is 1 h ahead of Guyancourt. Live clocks for both, the working hours they share, and how each one sits against your own time.
+1 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Guyancourt 02:43 2:43 AM Sofia 03:43 3:43 AM You –:–
02:43 2:43 AM
Central European Summer Time · UTC+2
☀️ 08:21 · 🌙 18:53
03:43 3:43 AM
Eastern European Summer Time · UTC+3
☀️ 07:47 · 🌙 18:37
·
+1 h
Sofia is 1 h ahead of Guyancourt.
When you, Guyancourt and Sofia are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇫🇷 Guyancourt
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
🇧🇬 Sofia
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 0 12 AM
📍 Your time
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Time zones side by side
| Detail | 🇫🇷 Guyancourt | 🇧🇬 Sofia |
|---|---|---|
| Local time | 02:43 | 03:43 |
| Local date | Wednesday, October 21, 2026 | Wednesday, October 21, 2026 |
| Time zone | Central European Summer Time | Eastern European Summer Time |
| UTC offset | UTC+2 | UTC+3 |
| Offset from Guyancourt | — | +1 h |
| IANA zone | Europe/Paris | Europe/Sofia |
| Daylight saving | On summer time → UTC+1, Oct 25, 02:00 | On summer time → UTC+2, Oct 25, 03:00 |
| Sunrise | 08:21 | 07:47 |
| Sunset | 18:53 | 18:37 |
| Daylight | 10 h 32 min | 10 h 50 min |
| People on this clock | 29,406 | 1,286,383 |
Compare Guyancourt with another city
More comparisons with Guyancourt: the time zones next to it and the far side of the clock.
Big time differences
Guyancourt and Sofia: common questions
What is the time difference between Guyancourt and Sofia?
Sofia is 1 hour ahead: it uses UTC+3, while Guyancourt is on UTC+2.
What time is it in Sofia when it is 9:00 AM in Guyancourt?
When it is 9:00 AM in Guyancourt, it is 10:00 AM in Sofia.
What time is it in Sofia when it is 6:00 PM in Guyancourt?
When it is 6:00 PM in Guyancourt, it is 7:00 PM in Sofia.
When do working hours in Guyancourt and in Sofia overlap?
Working hours (9:00 AM–6:00 PM) overlap from 9:00 AM to 5:00 PM in Guyancourt, which is 10:00 AM to 6:00 PM in Sofia.
When does the date change in Sofia compared with Guyancourt?
The new day starts in Sofia earlier: at 11:00 PM in Guyancourt it is already midnight there. Until 1:00 AM in Sofia, Guyancourt is still on the previous day.
Does the time gap between Guyancourt and Sofia change during the year?
No – both places switch to and from summer time on the same dates, so the gap stays 1 hour.
