What is the ISO week number in Les Ulis?

TimeDials shows the current ISO week number for Les Ulis in real time. ISO week numbers follow the ISO 8601 standard, where week 1 is the week containing the first Thursday of the year.

Does Les Ulis observe daylight saving time (DST)?

Yes, Les Ulis observes daylight saving time. The next clock change is on 2026-03-29 (clocks move forward to GMT+2).

Time in Les Ulis, Île-de-France, France — Local Time & Date

Live

--:--:--

Current local time in 🇫🇷 Les Ulis, Île-de-France, France.

CET/CEST UTC+01:00

Relative to You

Detecting your timezone…

Relative to UTC

+1 hours ahead

Noon here = 11:00 UTC

09:00 here = 08:00 UTC

12:00 here = 11:00 UTC

17:00 here = 16:00 UTC

ISO Week

11 Odd Week

Sun

07:10

18:33

Today

Mid-morning in Les Ulis. Offices are busy, meetings are underway. The current offset is UTC+01:00.

Daylight Saving Time

Last Clock Change

2025-10-26

Clocks moved back to GMT+1

Next Clock Change

2026-03-29

Clocks will move forward to GMT+2

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Quick Facts

Country	🇫🇷France
State / Region	Île-de-France
Timezone	CET/CEST
UTC Offset	UTC+01:00
DST	Yes — daylight saving time observed
Population	25,785
Elevation	163 m
Sunrise	07:10
Sunset	18:33
Coordinates	48.68°N, 2.17°E

Map

Map data © OpenStreetMap contributors

Time Difference to Major Cities

City	Difference	Local Time
New York	-5h	--:--
Los Angeles	-8h	--:--
London	-1h	--:--
Dubai	+3h	--:--
Mumbai	+4h 30m	--:--
Singapore	+7h	--:--
Tokyo	+8h	--:--
Sydney	+10h	--:--
Sao Paulo	-4h	--:--
Cairo	+1h	--:--
Shanghai	+7h	--:--

Frequently Asked Questions

What are the business hours in Les Ulis?

Standard business hours in Les Ulis are 09:00–17:00 local time (CET/CEST). Check the live clock above to see the current local time. Use our Time Zone Planner to find the best meeting time across cities.

What is the UTC offset for Les Ulis?

Les Ulis is currently at UTC+01:00. The timezone identifier is CET/CEST. When it is noon in Les Ulis, it is 11:00 UTC. You can embed a live Les Ulis clock on your website.

What ISO week number is it in Les Ulis?

It is currently ISO week 11 (odd week) in Les Ulis. ISO week numbers follow the ISO 8601 standard, where week 1 is the week containing the first Thursday of the year. Learn more about ISO week numbers.

Does Les Ulis observe daylight saving time?

Yes, Les Ulis observes daylight saving time (DST). The most recent change was on 2025-10-26, when clocks moved back to GMT+1. The next change is on 2026-03-29, when clocks will move forward to GMT+2.