Riyadh to Mount Prospect time converter

Mount Prospect is 8 hours behind Riyadh. When it is 9:00 AM in Riyadh, it is 1:00 AM in Mount Prospect.

Riyadh AST

Saturday, October 17, 2026

Mount Prospect CDT

Friday, October 16, 2026

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

Riyadh to Mount Prospect conversion table

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

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

Best time to call or meet

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

Daylight saving time and the difference

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

  • Oct 17, 2026 – Nov 1, 2026: -8h
  • Nov 1, 2026 – Mar 14, 2027: -9h
  • Mar 14, 2027 – Oct 17, 2027: -8h

Distance

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

More conversions

Mount Prospect 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 Mount ProspectLondon to Mount ProspectLos Angeles to Mount ProspectChicago to Mount ProspectToronto to Mount ProspectSão Paulo to Mount ProspectParis to Mount ProspectBerlin to Mount ProspectMoscow to Mount ProspectDubai to Mount ProspectNew Delhi to Mount ProspectBangkok to Mount Prospect

Questions and answers

What is the time difference between Riyadh and Mount Prospect?

Mount Prospect is 8 hours behind Riyadh.

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

When it is 9:00 AM in Riyadh, it is 1:00 AM in Mount Prospect.

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

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

Does the time difference between Riyadh and Mount Prospect change?

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