Except for two Mexican states that do not observe Daylight Savings Time (DST), Mexico moves its clocks back by one hour in the fall of 2021.
Most of Mexico moves its clocks backward one hour on the last Sunday in October 2021. Some parts of Mexico move their fall clocks backward one hour on the first Sunday in November 2021 (in line with the U.S.).
The Mexican states of Sonora and Quintana Roo are not observing DST in 2021
The Mexican states of Sonora (bordering Arizona and New Mexico in the US) and Quintana Roo (which includes the popular resorts of Cancun, Playa del Carmen, Tulum, and the islands of Isla Mujeres and Cozumel) will not observe DST in 2021.
Fall Clock Changes in Mexico in 2021 (“Fall Backward”)
DST in most of Mexico (except the states of Sonora and Quintana Roo) and Baja California Sur will end on Sunday October 31st 2021, when the clocks will be moved back again by one hour at 2 a.m.
The state of Baja California (not to be confused with Baja California Sur) and Mexican cities immediately bordering the US (including Juárez, Reynosa, and Matamoros) clocks move back one hour at 2 a.m. on Sunday November 7th, 2021.
Learn more about Mexico’s Four Time Zones
Note about US & European Clock Time Changes
Not all of Mexico’s clock-time change dates are synchronized with U.S. or European clock-time change dates, so if you’re traveling or scheduling appointments between Mexico, the US, and Europe this spring and autumn, make a note to double-check your times, especially as flights and other public transportation systems always operate their schedules using local time.
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