Riyadh to Rialto time converter

Rialto is 10 hours behind Riyadh. When it is 9:00 AM in Riyadh, it is 11:00 PM (Sun, Oct 18) in Rialto.

Riyadh AST

Monday, October 19, 2026

Rialto PDT

Sunday, October 18, 2026

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

Riyadh to Rialto conversion table

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

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

Best time to call or meet

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

Daylight saving time and the difference

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

  • Oct 19, 2026 – Nov 1, 2026: -10h
  • Nov 1, 2026 – Mar 14, 2027: -11h
  • Mar 14, 2027 – Oct 19, 2027: -10h

Distance

Riyadh and Rialto are 13,265 km (8,242 miles) apart in a straight line.

More conversions

Rialto to RiyadhRiyadh to New YorkRiyadh to LondonRiyadh to Los AngelesRiyadh to ChicagoRiyadh to TorontoRiyadh to São PauloRiyadh to ParisRiyadh to BerlinRiyadh to MoscowRiyadh to DubaiRiyadh to New DelhiRiyadh to Bangkok
New York to RialtoLondon to RialtoLos Angeles to RialtoChicago to RialtoToronto to RialtoSão Paulo to RialtoParis to RialtoBerlin to RialtoMoscow to RialtoDubai to RialtoNew Delhi to RialtoBangkok to Rialto

Questions and answers

What is the time difference between Riyadh and Rialto?

Rialto is 10 hours behind Riyadh.

What time is it in Rialto when it is 9 AM in Riyadh?

When it is 9:00 AM in Riyadh, it is 11:00 PM (Sun, Oct 18) in Rialto.

When is the best time to call Rialto from Riyadh?

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

Does the time difference between Riyadh and Rialto change?

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