Union City to Riyadh time converter

Riyadh is 10 hours ahead of Union City. When it is 9:00 AM in Union City, it is 7:00 PM in Riyadh.

Union City PDT

Sunday, October 18, 2026

Riyadh AST

Monday, October 19, 2026

Union City
California, United States
Sun, Oct 18
PDTUTC-7
Riyadh
Saudi Arabia
Mon, Oct 19
ASTUTC+3+10h
Finding your time zone…
Shared working hours (9:00–18:00)

Union City to Riyadh conversion table

Every hour of today in Union City and the matching time in Riyadh. Light rows are typical working hours (9:00–18:00).

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

Best time to call or meet

Working hours don't overlap fully. The closest fit is 7:00 AM – 8:00 AM in Union City (5:00 PM – 6:00 PM in Riyadh): working hours on one side, early or late on the other.

Daylight saving time and the difference

The difference changes during the year because Union City and Riyadh switch clocks on different dates:

  • Oct 18, 2026 – Nov 1, 2026: +10h
  • Nov 1, 2026 – Mar 14, 2027: +11h
  • Mar 14, 2027 – Oct 18, 2027: +10h

Distance

Union City and Riyadh are 12,990 km (8,072 miles) apart in a straight line.

More conversions

Riyadh to Union CityUnion City to New YorkUnion City to LondonUnion City to Los AngelesUnion City to ChicagoUnion City to TorontoUnion City to São PauloUnion City to ParisUnion City to BerlinUnion City to MoscowUnion City to DubaiUnion City to New DelhiUnion City to Bangkok
New York to RiyadhLondon to RiyadhLos Angeles to RiyadhChicago to RiyadhToronto to RiyadhSão Paulo to RiyadhParis to RiyadhBerlin to RiyadhMoscow to RiyadhDubai to RiyadhNew Delhi to RiyadhBangkok to Riyadh

Questions and answers

What is the time difference between Union City and Riyadh?

Riyadh is 10 hours ahead of Union City.

What time is it in Riyadh when it is 9 AM in Union City?

When it is 9:00 AM in Union City, it is 7:00 PM in Riyadh.

When is the best time to call Riyadh from Union City?

Working hours don't overlap fully. The closest fit is 7:00 AM – 8:00 AM in Union City (5:00 PM – 6:00 PM in Riyadh): working hours on one side, early or late on the other.

Does the time difference between Union City and Riyadh change?

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