Time difference: Boston and Sao Paulo

Sao Paulo is 1 hour ahead of Boston.

Sao Paulo is 1 hour ahead of Boston. Boston is UTC-4. Sao Paulo is UTC-3.

Boston on 15 October 2026: sunrise 06:57, sunset 18:02, day length 11 h 5 min.

Sao Paulo on 15 October 2026: sunrise 05:33, sunset 18:11, day length 12 h 38 min.

For Boston and Sao Paulo: The next clock change in Boston is 1 hour back on 1 November 2026 at 02:00, from UTC-4 to UTC-5.

For Sao Paulo and Boston: Sao Paulo has no clock change scheduled in the next year. The last year with a seasonal offset change was 2019. The offset now is UTC-3.

When the difference changes
Change
The gap changes on 1 November 2026 at 02:00, when clocks in Boston move back 1 hour.
The gap changes on 14 March 2027 at 02:00, when clocks in Boston move forward 1 hour.
The gap changes on 7 November 2027 at 02:00, when clocks in Boston move back 1 hour.
Working hours from each side
View09:00 to 17:00
From BostonBoston 09:00 to 16:00; Sao Paulo 10:00 to 17:00
From Sao PauloSao Paulo 10:00 to 17:00; Boston 09:00 to 16:00
Hours in Boston and Sao Paulo. Shaded cells are 09:00 to 17:00. The stronger shade is when both are.
BostonSao Paulo
00:0001:00
01:0002:00
02:0003:00
03:0004:00
04:0005:00
05:0006:00
06:0007:00
07:0008:00
08:0009:00
09:0010:00
10:0011:00
11:0012:00
12:0013:00
13:0014:00
14:0015:00
15:0016:00
16:0017:00
17:0018:00
18:0019:00
19:0020:00
20:0021:00
21:0022:00
22:0023:00
23:0000:00 (next day)
Sun this year
CityLongest dayShortest day
Boston with Sao Paulo21 June 2026, 15 h 17 min21 December 2026, 9 h 5 min
Sao Paulo with Boston21 December 2026, 13 h 35 min21 June 2026, 10 h 41 min
Next public holidays
CityDateHoliday
Boston and Sao Paulo11 November 2026Veterans Day
Boston and Sao Paulo26 November 2026Thanksgiving Day
Sao Paulo and Boston25 October 2026Dia de Eleição
Sao Paulo and Boston2 November 2026Dia de Finados