Mount Prospect to Riyadh time converter

Riyadh is 8 hours ahead of Mount Prospect. When it is 9:00 AM in Mount Prospect, it is 5:00 PM in Riyadh.

Mount Prospect CDT

Friday, October 16, 2026

Riyadh AST

Saturday, October 17, 2026

Mount Prospect
Illinois, United States
Fri, Oct 16
CDTUTC-5
Riyadh
Saudi Arabia
Sat, Oct 17
ASTUTC+3+8h
Finding your time zone…
Shared working hours (9:00–18:00)

Mount Prospect to Riyadh conversion table

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

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

Best time to call or meet

Both sides are at work from 9:00 AM – 10:00 AM in Mount Prospect (5:00 PM – 6:00 PM in Riyadh).

Daylight saving time and the difference

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

  • Oct 16, 2026 – Nov 1, 2026: +8h
  • Nov 1, 2026 – Mar 14, 2027: +9h
  • Mar 14, 2027 – Oct 16, 2027: +8h

Distance

Mount Prospect and Riyadh are 11,253 km (6,992 miles) apart in a straight line.

More conversions

Riyadh to Mount ProspectMount Prospect to New YorkMount Prospect to LondonMount Prospect to Los AngelesMount Prospect to ChicagoMount Prospect to TorontoMount Prospect to São PauloMount Prospect to ParisMount Prospect to BerlinMount Prospect to MoscowMount Prospect to DubaiMount Prospect to New DelhiMount Prospect 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 Mount Prospect and Riyadh?

Riyadh is 8 hours ahead of Mount Prospect.

What time is it in Riyadh when it is 9 AM in Mount Prospect?

When it is 9:00 AM in Mount Prospect, it is 5:00 PM in Riyadh.

When is the best time to call Riyadh from Mount Prospect?

Both sides are at work from 9:00 AM – 10:00 AM in Mount Prospect (5:00 PM – 6:00 PM in Riyadh).

Does the time difference between Mount Prospect 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.