Buenos Aires to Westmont time converter

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

Buenos Aires ART

Wednesday, October 21, 2026

Westmont PDT

Wednesday, October 21, 2026

Argentina
Wed, Oct 21
ARTUTC-3
California, United States
Wed, Oct 21
PDTUTC-7-4h
Finding your time zone…

12:53 PM in Buenos Aires, Wednesday, October 21, 2026

Shared working hours (9:00–18:00)

Buenos Aires to Westmont conversion table

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

Buenos AiresWestmont
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 Buenos Aires (9:00 AM – 2:00 PM in Westmont).

Daylight saving time and the difference

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

  • Oct 21, 2026 – Nov 1, 2026: -4h
  • Nov 1, 2026 – Mar 14, 2027: -5h
  • Mar 14, 2027 – Oct 21, 2027: -4h

Distance

Buenos Aires and Westmont are 9,848 km (6,119 miles) apart in a straight line.

More conversions

Questions and answers

What is the time difference between Buenos Aires and Westmont?

Westmont is 4 hours behind Buenos Aires.

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

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

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

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

Does the time difference between Buenos Aires and Westmont change?

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