O'Fallon to Buenos Aires time converter

Buenos Aires is 2 hours ahead of O'Fallon. When it is 9:00 AM in O'Fallon, it is 11:00 AM in Buenos Aires.

O'Fallon CDT

Wednesday, October 21, 2026

Buenos Aires ART

Wednesday, October 21, 2026

O'Fallon
Illinois, United States
Wed, Oct 21
CDTUTC-5
Buenos Aires
Argentina
Wed, Oct 21
ARTUTC-3+2h
Finding your time zone…
Shared working hours (9:00–18:00)

O'Fallon to Buenos Aires conversion table

Every hour of today in O'Fallon and the matching time in Buenos Aires. Light rows are typical working hours (9:00–18:00).

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

Best time to call or meet

Both sides are at work from 9:00 AM – 4:00 PM in O'Fallon (11:00 AM – 6:00 PM in Buenos Aires).

Daylight saving time and the difference

The difference changes during the year because O'Fallon and Buenos Aires switch clocks on different dates:

  • Oct 21, 2026 – Nov 1, 2026: +2h
  • Nov 1, 2026 – Mar 14, 2027: +3h
  • Mar 14, 2027 – Oct 21, 2027: +2h

Distance

O'Fallon and Buenos Aires are 8,764 km (5,446 miles) apart in a straight line.

More conversions

Buenos Aires to O'FallonO'Fallon to New YorkO'Fallon to LondonO'Fallon to Los AngelesO'Fallon to ChicagoO'Fallon to TorontoO'Fallon to São PauloO'Fallon to ParisO'Fallon to BerlinO'Fallon to MoscowO'Fallon to DubaiO'Fallon to New DelhiO'Fallon to Bangkok
New York to Buenos AiresLondon to Buenos AiresLos Angeles to Buenos AiresChicago to Buenos AiresToronto to Buenos AiresSão Paulo to Buenos AiresParis to Buenos AiresBerlin to Buenos AiresMoscow to Buenos AiresDubai to Buenos AiresNew Delhi to Buenos AiresBangkok to Buenos Aires

Questions and answers

What is the time difference between O'Fallon and Buenos Aires?

Buenos Aires is 2 hours ahead of O'Fallon.

What time is it in Buenos Aires when it is 9 AM in O'Fallon?

When it is 9:00 AM in O'Fallon, it is 11:00 AM in Buenos Aires.

When is the best time to call Buenos Aires from O'Fallon?

Both sides are at work from 9:00 AM – 4:00 PM in O'Fallon (11:00 AM – 6:00 PM in Buenos Aires).

Does the time difference between O'Fallon and Buenos Aires change?

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