First Day of Autumn in Guyancourt
France — September 1, 2026
until
---
Days
--
Hours
--
Minutes
--
Seconds
until First Day of Autumn on September 1, 2026
64% elapsed
130 days remaining
Guyancourt
00:57:20
Europe/Paris
GMT / UTC
22:57:20
Etc/UTC
Mecca
01:57:20
UTC+3
About First Day of Autumn
Meteorological start of autumn on September 1, marking the transition from summer to cooler months.
Guyancourt Quick Facts
- Country
- 🇫🇷 France
- Timezone
- Europe/Paris
- Population
- 31,989
- Coordinates
- 48.7733, 2.0739
Sun Times Today in Guyancourt
Sunrise
06:44
Solar Noon
13:49
Sunset
20:55
Golden Hour
20:12
Daylight
14h 10m
Local time
Prayer Times Today in Guyancourt
| Prayer | Time (Local) |
|---|---|
| Fajr | 04:38 |
| Sunrise | 06:44 |
| Dhuhr | 13:49 |
| Asr | 17:44 |
| Maghrib | 20:55 |
| Isha | 22:52 |
Based on MWL calculation method. Local time.
Weather
Nearby Cities
Upcoming Events in Guyancourt
Map
Map loading...
Frequently Asked Questions
- When is First Day of Autumn in Guyancourt?
- First Day of Autumn in Guyancourt falls on Tuesday, September 1, 2026.
- What timezone is Guyancourt in?
- Guyancourt is in the Europe/Paris timezone.