Riyadh to Waterloo time converter

Waterloo is 7 hours behind Riyadh. When it is 9:00 AM in Riyadh, it is 2:00 AM in Waterloo.

Riyadh AST

Saturday, October 17, 2026

Waterloo EDT

Friday, October 16, 2026

Riyadh
Saudi Arabia
Sat, Oct 17
ASTUTC+3
Waterloo
Ontario, Canada
Fri, Oct 16
EDTUTC-4-7h
Finding your time zone…
Shared working hours (9:00–18:00)

Riyadh to Waterloo conversion table

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

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

Best time to call or meet

Both sides are at work from 4:00 PM – 6:00 PM in Riyadh (9:00 AM – 11:00 AM in Waterloo).

Daylight saving time and the difference

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

  • Oct 17, 2026 – Nov 1, 2026: -7h
  • Nov 1, 2026 – Mar 14, 2027: -8h
  • Mar 14, 2027 – Oct 17, 2027: -7h

Distance

Riyadh and Waterloo are 10,721 km (6,662 miles) apart in a straight line.

More conversions

Waterloo 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 WaterlooLondon to WaterlooLos Angeles to WaterlooChicago to WaterlooToronto to WaterlooSão Paulo to WaterlooParis to WaterlooBerlin to WaterlooMoscow to WaterlooDubai to WaterlooNew Delhi to WaterlooBangkok to Waterloo

Questions and answers

What is the time difference between Riyadh and Waterloo?

Waterloo is 7 hours behind Riyadh.

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

When it is 9:00 AM in Riyadh, it is 2:00 AM in Waterloo.

When is the best time to call Waterloo from Riyadh?

Both sides are at work from 4:00 PM – 6:00 PM in Riyadh (9:00 AM – 11:00 AM in Waterloo).

Does the time difference between Riyadh and Waterloo change?

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