Cairo to Guyancourt: time difference
Guyancourt is 1 h behind Cairo. 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.
Cairo 04:17 4:17 AM Guyancourt 03:17 3:17 AM You –:–
04:17 4:17 AM
Eastern European Summer Time · UTC+3
☀️ 07:01 · 🌙 18:19
03:17 3:17 AM
Central European Summer Time · UTC+2
☀️ 08:21 · 🌙 18:53
·
−1 h
Guyancourt is 1 h behind Cairo.
When you, Cairo and Guyancourt are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇪🇬 Cairo
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
🇫🇷 Guyancourt
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 | 🇪🇬 Cairo | 🇫🇷 Guyancourt |
|---|---|---|
| Local time | 04:17 | 03:17 |
| Local date | Wednesday, October 21, 2026 | Wednesday, October 21, 2026 |
| Time zone | Eastern European Summer Time | Central European Summer Time |
| UTC offset | UTC+3 | UTC+2 |
| Offset from Cairo | — | −1 h |
| IANA zone | Africa/Cairo | Europe/Paris |
| Daylight saving | On summer time → UTC+2, Oct 29, 23:00 | On summer time → UTC+1, Oct 25, 02:00 |
| Sunrise | 07:01 | 08:21 |
| Sunset | 18:19 | 18:53 |
| Daylight | 11 h 18 min | 10 h 32 min |
| People on this clock | 9,120,350 | 29,406 |
Compare Cairo with another city
More comparisons with Cairo: the time zones next to it and the far side of the clock.
Big time differences
Cairo and Guyancourt: common questions
What is the time difference between Cairo and Guyancourt?
Guyancourt is 1 hour behind: it uses UTC+2, while Cairo is on UTC+3.
If it is 9:00 AM in Cairo, what time is it in Guyancourt?
At 9:00 AM in Cairo, clocks in Guyancourt show 8:00 AM.
If it is 6:00 PM in Cairo, what time is it in Guyancourt?
At 6:00 PM in Cairo, clocks in Guyancourt show 5:00 PM.
Is there a time when both Cairo and Guyancourt are at work?
Yes: from 10:00 AM to 6:00 PM in Cairo (9:00 AM to 5:00 PM in Guyancourt), the working days (9:00 AM–6:00 PM) overlap.
When is it still the previous day in Guyancourt?
Until 1:00 AM in Cairo it is still the previous day in Guyancourt. The other way round, from 11:00 PM in Guyancourt it is already the next day in Cairo.
Does the time difference between Cairo and Guyancourt change?
Yes. Both places change their clocks, but on different dates. From October 25, 2026, Guyancourt will be 2 hours behind Cairo.
