Highlighted rows fall within 09:00–18:00 in both places: 8 shared working hours.
Clock changes in Boston and Buenos Aires
Boston
Eastern Daylight Time (EDT)
Next clock change Sun 1 Nov 2026 (UTC−4 → UTC−5)
Buenos Aires
Argentina Standard Time (UTC−3)
No daylight saving time.
Time difference between Boston and Buenos Aires today
At this moment Buenos Aires is 1 hour ahead of Boston. When it is 09:00 in Boston, it is 10:00 in Buenos Aires. Boston is on Eastern Daylight Time (EDT); Buenos Aires is on Argentina Standard Time (UTC−3).
When the Boston to Buenos Aires time difference changes
For most of the year Buenos Aires is 1 hour ahead of Boston. From 1 November to 31 December 2026, Buenos Aires is 2 hours ahead of Boston instead, because the two places change their clocks on different dates. Meetings booked by the usual gap land an hour off in those weeks.
Dates
Buenos Aires vs Boston
Length
8 March 2026 to 31 October 2026
1 hour ahead
238 days
1 November 2026 to 31 December 2026
2 hours ahead
61 days
1 January 2027 to 13 March 2027
2 hours ahead
72 days
14 March 2027 to 6 November 2027
1 hour ahead
238 days
7 November 2027 to 31 December 2027
2 hours ahead
55 days
Calling hours for Boston and Buenos Aires
When Buenos Aires is 1 hour ahead of Boston: 7 shared office hours, 09:00 to 16:00 in Boston (10:00 to 17:00 in Buenos Aires).
When Buenos Aires is 2 hours ahead of Boston: 6 shared office hours, 09:00 to 15:00 in Boston (11:00 to 17:00 in Buenos Aires).
Frequently asked questions about Boston and Buenos Aires time
What time is it in Buenos Aires when it is 9:00 AM in Boston?
10:00 today; Buenos Aires is 1 hour ahead of Boston.
Does the time difference between Boston and Buenos Aires change?
Yes. It is usually 1 hour ahead, but changes when one side moves its clocks: 2 hours ahead from 1 November to 31 December 2026; 2 hours ahead from 1 January to 13 March 2027.