Sunday will be a 25-hour day as US clocks fall back on November 1

Clocks in most of the United States will fall back one hour on Sunday, November 1, 2026, ending daylight saving time for the winter. At 2 a.m. local time, the clock will read 1 a.m., and the country returns to standard time. For Brazilians, the gap grows: Brasília will then be two hours ahead of regions with a large Brazilian presence, such as New York, Miami and Orlando. The last spring change took place on March 8, 2026.

The change happens at the same time across the main continental time zones, and it requires quick action from airlines, travelers and companies with financial or corporate operations abroad. When the clocks show 2 a.m. in each region, they go back to 1 a.m., so the day effectively lasts 25 hours. Travelers should check boarding passes closely, because international itineraries follow the local time of each airport.

Brazil has not used daylight saving time since 2019, when Decree 9,772 of April 25, 2019 ended the practice nationwide, so only the American clocks move. The hour difference is easy to calculate: at 10 a.m. in Brasília, it is 8 a.m. on the US East Coast, and at 3 p.m. in Brasília, it is 1 p.m. in Orlando and New York. An 8 p.m. meeting in Brasília falls at 6 p.m. Eastern time.

The current rule comes from the Energy Policy Act of 2005, a federal law that set daylight saving time from the second Sunday of March to the first Sunday of November. The law allows exceptions: Hawaii and most of Arizona keep standard time all year, and the territories of Puerto Rico, Guam and the US Virgin Islands also skip the change. The House of Representatives approved the Sunshine Protection Act, H.R. 139, on July 14, 2026, by 308 votes to 117. The bill remains in the Senate Committee on Commerce, Science, and Transportation and is not law, so the change stands.

Smartphones, smartwatches and computers switch on their own, as long as the automatic time zone setting stays on. Analog clocks, dashboard clocks in vehicles and appliances with fixed digital panels need manual correction before Sunday’s activities begin.

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Companies with remote staff and partners in the United States will have to reschedule calls and meetings right away. The end of the working day in Brazil will coincide with mid-afternoon in offices in Atlanta and Washington, leaving a shorter window for decisions in real time.

The stock market also feels the change. The regular session of the New York Stock Exchange and the Nasdaq index will run from 11:30 a.m. to 6 p.m. Brasília time after the switch, compared with 10:30 a.m. to 5 p.m. before the change. The shift affects liquidity in cross-listed shares, depositary receipts and futures contracts traded on B3.

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Airlines keep the nominal departure times on tickets unchanged, but the travel time as passengers see it on the clock and the arrival time will change. Ground transfers and hotel reservations should be confirmed before the trip to avoid mismatches on arrival.

The previous change took effect on March 8, 2026, when clocks moved forward. Under the current federal schedule, clocks move forward again on March 14, 2027, starting the next daylight saving period. Until then, the US East Coast stays two hours behind Brasília, while the Central, Mountain and Pacific zones are three, four and five hours behind, respectively.