Costa Mesa to Shanghai time converter

Shanghai is 15 hours ahead of Costa Mesa. When it is 9:00 AM in Costa Mesa, it is 12:00 AM (Tue, Oct 20) in Shanghai.

Costa Mesa PDT

Monday, October 19, 2026

Shanghai CST

Tuesday, October 20, 2026

Costa Mesa
California, United States
Mon, Oct 19
PDTUTC-7
Shanghai
China
Tue, Oct 20
CSTUTC+8+15h
Finding your time zone…
Shared working hours (9:00–18:00)

Costa Mesa to Shanghai conversion table

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

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

Best time to call or meet

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

Daylight saving time and the difference

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

  • Oct 19, 2026 – Nov 1, 2026: +15h
  • Nov 1, 2026 – Mar 14, 2027: +16h
  • Mar 14, 2027 – Oct 19, 2027: +15h

Distance

Costa Mesa and Shanghai are 10,489 km (6,518 miles) apart in a straight line.

More conversions

Shanghai to Costa MesaCosta Mesa to New YorkCosta Mesa to LondonCosta Mesa to Los AngelesCosta Mesa to ChicagoCosta Mesa to TorontoCosta Mesa to São PauloCosta Mesa to ParisCosta Mesa to BerlinCosta Mesa to MoscowCosta Mesa to DubaiCosta Mesa to New DelhiCosta Mesa to Bangkok
New York to ShanghaiLondon to ShanghaiLos Angeles to ShanghaiChicago to ShanghaiToronto to ShanghaiSão Paulo to ShanghaiParis to ShanghaiBerlin to ShanghaiMoscow to ShanghaiDubai to ShanghaiNew Delhi to ShanghaiBangkok to Shanghai

Questions and answers

What is the time difference between Costa Mesa and Shanghai?

Shanghai is 15 hours ahead of Costa Mesa.

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

When it is 9:00 AM in Costa Mesa, it is 12:00 AM (Tue, Oct 20) in Shanghai.

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

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

Does the time difference between Costa Mesa and Shanghai change?

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