Washington to Buenos Aires time converter

Buenos Aires is 4 hours behind Washington. When it is 9:00 AM in Washington, it is 5:00 AM in Buenos Aires.

Washington BST

Tuesday, October 20, 2026

Buenos Aires ART

Monday, October 19, 2026

Washington
United Kingdom
Tue, Oct 20
BSTUTC+1
Buenos Aires
Argentina
Mon, Oct 19
ARTUTC-3-4h
Finding your time zone…
Shared working hours (9:00–18:00)

Washington to Buenos Aires conversion table

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

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

Best time to call or meet

Both sides are at work from 1:00 PM – 6:00 PM in Washington (9:00 AM – 2:00 PM in Buenos Aires).

Daylight saving time and the difference

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

  • Oct 20, 2026 – Oct 25, 2026: -4h
  • Oct 25, 2026 – Mar 28, 2027: -3h
  • Mar 28, 2027 – Oct 20, 2027: -4h

Distance

Washington and Buenos Aires are 11,330 km (7,040 miles) apart in a straight line.

More conversions

Buenos Aires to WashingtonWashington to New YorkWashington to LondonWashington to Los AngelesWashington to ChicagoWashington to TorontoWashington to São PauloWashington to ParisWashington to BerlinWashington to MoscowWashington to DubaiWashington to New DelhiWashington 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 Washington and Buenos Aires?

Buenos Aires is 4 hours behind Washington.

What time is it in Buenos Aires when it is 9 AM in Washington?

When it is 9:00 AM in Washington, it is 5:00 AM in Buenos Aires.

When is the best time to call Buenos Aires from Washington?

Both sides are at work from 1:00 PM – 6:00 PM in Washington (9:00 AM – 2:00 PM in Buenos Aires).

Does the time difference between Washington 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.