Seoul to Rialto time converter

Rialto is 16 hours behind Seoul. When it is 9:00 AM in Seoul, it is 5:00 PM (Tue, Oct 20) in Rialto.

Seoul KST

Wednesday, October 21, 2026

Rialto PDT

Tuesday, October 20, 2026

Seoul
South Korea
Wed, Oct 21
KSTUTC+9
Rialto
California, United States
Tue, Oct 20
PDTUTC-7-16h
Finding your time zone…
Shared working hours (9:00–18:00)

Seoul to Rialto conversion table

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

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

Best time to call or meet

Both sides are at work from 9:00 AM – 10:00 AM in Seoul (5:00 PM – 6:00 PM in Rialto).

Daylight saving time and the difference

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

  • Oct 21, 2026 – Nov 1, 2026: -16h
  • Nov 1, 2026 – Mar 14, 2027: -17h
  • Mar 14, 2027 – Oct 21, 2027: -16h

Distance

Seoul and Rialto are 9,639 km (5,989 miles) apart in a straight line.

More conversions

Rialto to SeoulSeoul to New YorkSeoul to LondonSeoul to Los AngelesSeoul to ChicagoSeoul to TorontoSeoul to São PauloSeoul to ParisSeoul to BerlinSeoul to MoscowSeoul to DubaiSeoul to New DelhiSeoul 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 Seoul and Rialto?

Rialto is 16 hours behind Seoul.

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

When it is 9:00 AM in Seoul, it is 5:00 PM (Tue, Oct 20) in Rialto.

When is the best time to call Rialto from Seoul?

Both sides are at work from 9:00 AM – 10:00 AM in Seoul (5:00 PM – 6:00 PM in Rialto).

Does the time difference between Seoul 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.