Paris to Costa Mesa time converter

Costa Mesa is 9 hours behind Paris. When it is 9:00 AM in Paris, it is 12:00 AM in Costa Mesa.

Paris CEST

Sunday, October 18, 2026

Costa Mesa PDT

Sunday, October 18, 2026

Paris
France
Sun, Oct 18
CESTUTC+2
Costa Mesa
California, United States
Sun, Oct 18
PDTUTC-7-9h
Finding your time zone…
Shared working hours (9:00–18:00)

Paris to Costa Mesa conversion table

Every hour of today in Paris and the matching time in Costa Mesa. Light rows are typical working hours (9:00–18:00).

ParisCosta Mesa
12:00 AM3:00 PM−1 day
1:00 AM4:00 PM−1 day
2:00 AM5:00 PM−1 day
3:00 AM6:00 PM−1 day
4:00 AM7:00 PM−1 day
5:00 AM8:00 PM−1 day
6:00 AM9:00 PM−1 day
7:00 AM10:00 PM−1 day
8:00 AM11:00 PM−1 day
9:00 AM12:00 AM
10:00 AM1:00 AM
11:00 AM2:00 AM
12:00 PM3:00 AM
1:00 PM4:00 AM
2:00 PM5:00 AM
3:00 PM6:00 AM
4:00 PM7:00 AM
5:00 PM8:00 AM
6:00 PM9:00 AM
7:00 PM10:00 AM
8:00 PM11:00 AM
9:00 PM12:00 PM
10:00 PM1:00 PM
11:00 PM2:00 PM

Best time to call or meet

Working hours don't overlap fully. The closest fit is 4:00 PM – 6:00 PM in Paris (7:00 AM – 9:00 AM in Costa Mesa): working hours on one side, early or late on the other.

Daylight saving time and the difference

The difference changes during the year because Paris and Costa Mesa switch clocks on different dates:

  • Oct 18, 2026 – Oct 25, 2026: -9h
  • Oct 25, 2026 – Nov 1, 2026: -8h
  • Nov 1, 2026 – Mar 14, 2027: -9h
  • Mar 14, 2027 – Mar 28, 2027: -8h
  • Mar 28, 2027 – Oct 18, 2027: -9h

Distance

Paris and Costa Mesa are 9,106 km (5,658 miles) apart in a straight line.

More conversions

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Questions and answers

What is the time difference between Paris and Costa Mesa?

Costa Mesa is 9 hours behind Paris.

What time is it in Costa Mesa when it is 9 AM in Paris?

When it is 9:00 AM in Paris, it is 12:00 AM in Costa Mesa.

When is the best time to call Costa Mesa from Paris?

Working hours don't overlap fully. The closest fit is 4:00 PM – 6:00 PM in Paris (7:00 AM – 9:00 AM in Costa Mesa): working hours on one side, early or late on the other.

Does the time difference between Paris and Costa Mesa change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.