Right now, local time in Guyancourt is 14:54 (GMT+1, UTC+01:00), and today is Monday, November 2, 2026. The live clock above updates every second.
Guyancourt ranks #18451 worldwide by population and #283 in France.
Time zone info
- Time zone
- Europe/Paris GMT+1
- UTC offset
- UTC+01:00
- Daylight saving
- Yes, in force now ✅ — Clocks go forward by 1 hour on March 28, 2027
- Solar time
- Clocks run about 36m behind the sun
- ISO week
- Week 45
Sunrise, sunset & moon today
- Sunrise
- 07:40
- Sunset
- 17:32
- Day length
- 9h 52m
- Solar noon
- 12:36
- Daylight range
- 8h 15m (winter) – 16h 10m (summer)
- Moon phase
- 🌗 Last Quarter · 50% illuminated
Full sunrise & sunset timetable for Guyancourt — golden hour, twilight and month view →
📍 Location & geography
- Coordinates
- 48.7733° N, 2.0739° E
- Hemisphere
- Northern · Eastern
- Elevation
- At or near sea level
- Region
- Île-de-France
- Country
- 🇫🇷 France
- Population
- 31,989 · #18451 worldwide
🌍 Antipode — the opposite side of the Earth
Dig straight down from Guyancourt through the centre of the Earth and you surface on the far side of the planet, at the antipode.
- Antipode coordinates
- 48.77° S, 177.93° W
- Hemisphere
- Southern · Western
- What lies there
- Open ocean or remote wilderness — the nearest city we track is Waitangi, New Zealand, 546 km away
- Through the Earth
- ≈ 12,742 km in a straight line (≈ 20,015 km along the surface)
🕌 Prayer times in Guyancourt today MWL
- Fajr
- 05:53
- Sunrise
- 07:40
- Dhuhr
- 12:36
- Asr
- 15:04
- Maghrib
- 17:30
- Isha
- 19:11
- Qibla direction
- 118.8° from north (ESE (119°))
Full prayer timetable for Guyancourt — this month, 7-day forecast and Qibla →
Guyancourt sits in the Europe/Paris time zone, UTC+01:00. The clocks are currently shifted forward for daylight saving time. Today brings 9h 52m of daylight, and nights are longer than days. It is one of the 8941 cities we cover in France.
Guyancourt's nearest major hub of the ones tracked below is Paris, 22 km away; even Sydney lies some 16,983 km off. Its position on the globe is 48.77° N, 2.07° E, and the point on the exact opposite side of the Earth is described in the antipode section below.
Time difference with major cities
| Los Angeles | 05:54 | −9h |
| Chicago | 07:54 | −7h |
| São Paulo | 10:54 | −4h |
| London | 13:54 | −1h |
| Paris | 14:54 | same time |
| Moscow | 16:54 | +2h |
| Dubai | 17:54 | +3h |
| Mumbai | 19:24 | +4h 30m |
| Singapore | 21:54 | +7h |
| Hong Kong | 21:54 | +7h |
| Tokyo | 22:54 | +8h |
| Sydney | 00:54 | +10h |
Best time to call Guyancourt
Standard business hours (9:00 – 17:00) in major hubs, expressed in Guyancourt local time:
Cities sharing Guyancourt's time zone
- ParisFR
- MarseilleFR
- LyonFR
- ToulouseFR
- NiceFR
- NantesFR
- Marne La ValléeFR
- StrasbourgFR
Other cities in France
- Paris14:54
- Marseille14:54
- Lyon14:54
- Toulouse14:54
- Nice14:54
- Nantes14:54
- Marne La Vallée14:54
- Strasbourg14:54
- Bordeaux14:54
- Montpellier14:54
- Lille14:54
- Paris 15 Vaugirard14:54
Distances from Guyancourt
| Paris | 22 km | ENE (64°) |
| London | 342 km | NNW (334°) |
| Moscow | 2,509 km | ENE (58°) |
| Dubai | 5,263 km | E (100°) |
| Chicago | 6,638 km | WNW (300°) |
| Mumbai | 7,033 km | E (91°) |
| Los Angeles | 9,077 km | NW (314°) |
| São Paulo | 9,381 km | SW (224°) |
| Hong Kong | 9,649 km | ENE (59°) |
| Tokyo | 9,731 km | NNE (33°) |
| Singapore | 10,751 km | E (80°) |
| Sydney | 16,983 km | ENE (68°) |
Cities near Guyancourt
- Saint-Cyr-l'École3 km · 14:54
- Voisins-le-Bretonneux2 km · 14:54
- Magny-les-Hameaux3 km · 14:54
- Montigny-le-Bretonneux3 km · 14:54
- Châteaufort4 km · 14:54
- Fontenay-le-Fleury5 km · 14:54
- Buc4 km · 14:54
- Saint-Quentin-en-Yvelines4 km · 14:54
FAQ
What time is it in Guyancourt right now?
The live clock at the top of this page shows the current local time in Guyancourt (France), updated every second. It is currently week 45.
What time zone is Guyancourt in?
Guyancourt runs on the Europe/Paris IANA time zone (UTC+01:00), currently abbreviated GMT+1.
Does Guyancourt observe daylight saving time?
Yes — daylight saving time is in force right now. Clocks go forward by 1 hour on March 28, 2027.
What time is sunrise and sunset in Guyancourt today?
Guyancourt sees sunrise at 07:40 and sunset at 17:32 today, giving 9h 52m of daylight.
What moon phase is visible over Guyancourt tonight?
The moon phase over Guyancourt tonight is 🌗 Last Quarter with 49.5% illumination.
What is the antipode of Guyancourt?
The antipode of Guyancourt — the point on the exact opposite side of the Earth — lies at 48.77° S, 177.93° W. It falls in the ocean or a remote wilderness — the nearest city we track is Waitangi, New Zealand, roughly 546 km away. The straight-line distance through the Earth is about 12,742 km.
How high above sea level is Guyancourt?
Guyancourt lies at or very near sea level.
What is solar time in Guyancourt?
Solar time follows the Sun's actual position, with solar noon when the Sun is highest in the sky. In Guyancourt, clocks run about 36 minutes behind local solar time, because the official time zone does not exactly match the Sun's position.