Except for two Mexican states that do not observe Daylight Savings Time (DST), Mexico moves its clocks forward by one hour on April 1, 2018.
The states of Sonora and Quintana Roo are not observing DST
The Mexican states of Sonora and Quintana Roo (which includes the popular resorts of Cancún, Playa del Carmen, Tulum, Isla Mujeres and Cozumel) will not observe DST in 2018.
Spring Clock Changes in Mexico 2018 (“Spring Forward”) DST will start on Sunday April 1st, 2018, when the clocks will be moved forward by one hour at 2 a.m.
Note about US & European Clock Time Changes
Mexico’s mainland clock-time change dates are not usually 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.