Highlighted rows fall within 09:00–18:00 in both places: 8 shared working hours.
Clock changes in Boston and São Paulo
Boston
Eastern Daylight Time (EDT)
Next clock change Sun 1 Nov 2026 (UTC−4 → UTC−5)
São Paulo
Brasilia Standard Time (UTC−3)
No daylight saving time.
Time difference between Boston and São Paulo today
Today São Paulo is 1 hour ahead of Boston. When it is 09:00 in Boston, it is 10:00 in São Paulo. Boston is on Eastern Daylight Time (EDT); São Paulo is on Brasilia Standard Time (UTC−3).
When the Boston to São Paulo time difference changes
For most of the year São Paulo is 1 hour ahead of Boston. From 1 November to 31 December 2026, São Paulo 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
São Paulo 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
Best time for a meeting between Boston and São Paulo
When São Paulo is 1 hour ahead of Boston: 7 shared office hours, 09:00 to 16:00 in Boston (10:00 to 17:00 in São Paulo).
When São Paulo is 2 hours ahead of Boston: 6 shared office hours, 09:00 to 15:00 in Boston (11:00 to 17:00 in São Paulo).
Frequently asked questions about Boston and São Paulo time
What time is it in São Paulo when it is 9:00 AM in Boston?
10:00 today; São Paulo is 1 hour ahead of Boston.
Does the time difference between Boston and São Paulo 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.