Johannesburg to San Mateo time converter

San Mateo is 9 hours behind Johannesburg. When it is 9:00 AM in Johannesburg, it is 12:00 AM in San Mateo.

Johannesburg SAST

Thursday, October 22, 2026

San Mateo PDT

Wednesday, October 21, 2026

Johannesburg
South Africa
Thu, Oct 22
SASTUTC+2
San Mateo
California, United States
Wed, Oct 21
PDTUTC-7-9h
Finding your time zone…
Shared working hours (9:00–18:00)

Johannesburg to San Mateo conversion table

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

JohannesburgSan Mateo
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 Johannesburg (7:00 AM – 9:00 AM in San Mateo): working hours on one side, early or late on the other.

Daylight saving time and the difference

The difference changes during the year because Johannesburg and San Mateo switch clocks on different dates:

  • Oct 22, 2026 – Nov 1, 2026: -9h
  • Nov 1, 2026 – Mar 14, 2027: -10h
  • Mar 14, 2027 – Oct 22, 2027: -9h

Distance

Johannesburg and San Mateo are 16,963 km (10,540 miles) apart in a straight line.

More conversions

San Mateo to JohannesburgJohannesburg to New YorkJohannesburg to LondonJohannesburg to Los AngelesJohannesburg to ChicagoJohannesburg to TorontoJohannesburg to São PauloJohannesburg to ParisJohannesburg to BerlinJohannesburg to MoscowJohannesburg to DubaiJohannesburg to New DelhiJohannesburg to Bangkok
New York to San MateoLondon to San MateoLos Angeles to San MateoChicago to San MateoToronto to San MateoSão Paulo to San MateoParis to San MateoBerlin to San MateoMoscow to San MateoDubai to San MateoNew Delhi to San MateoBangkok to San Mateo

Questions and answers

What is the time difference between Johannesburg and San Mateo?

San Mateo is 9 hours behind Johannesburg.

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

When it is 9:00 AM in Johannesburg, it is 12:00 AM in San Mateo.

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

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

Does the time difference between Johannesburg and San Mateo change?

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