San Mateo to Shanghai time converter

Shanghai is 15 hours ahead of San Mateo. When it is 9:00 AM in San Mateo, it is 12:00 AM (Thu, Oct 22) in Shanghai.

San Mateo PDT

Wednesday, October 21, 2026

Shanghai CST

Thursday, October 22, 2026

San Mateo
California, United States
Wed, Oct 21
PDTUTC-7
Shanghai
China
Thu, Oct 22
CSTUTC+8+15h
Finding your time zone…
Shared working hours (9:00–18:00)

San Mateo to Shanghai conversion table

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

San MateoShanghai
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 San Mateo (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 San Mateo and Shanghai switch clocks on different dates:

  • Oct 21, 2026 – Nov 1, 2026: +15h
  • Nov 1, 2026 – Mar 14, 2027: +16h
  • Mar 14, 2027 – Oct 21, 2027: +15h

Distance

San Mateo and Shanghai are 9,902 km (6,153 miles) apart in a straight line.

More conversions

Shanghai to San MateoSan Mateo to New YorkSan Mateo to LondonSan Mateo to Los AngelesSan Mateo to ChicagoSan Mateo to TorontoSan Mateo to São PauloSan Mateo to ParisSan Mateo to BerlinSan Mateo to MoscowSan Mateo to DubaiSan Mateo to New DelhiSan Mateo 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 San Mateo and Shanghai?

Shanghai is 15 hours ahead of San Mateo.

What time is it in Shanghai when it is 9 AM in San Mateo?

When it is 9:00 AM in San Mateo, it is 12:00 AM (Thu, Oct 22) in Shanghai.

When is the best time to call Shanghai from San Mateo?

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

Does the time difference between San Mateo 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.