Daylight saving time in Mexico

Most of Mexico no longer observes daylight saving time (DST; Spanish: horario de verano) as it was abolished on Sunday, 30 October 2022.^[1] The exceptions are the entire state of Baja California, as well as the border municipalities in Chihuahua, Coahuila, Nuevo León, and Tamaulipas which still observe daylight savings time matching the schedule of the United States beginning on the second Sunday of March and ending on the first Sunday of November.^[1]

From 1996 to 2022, DST was observed even in its tropical regions, because of its increasing economic ties to the United States. It observed the schedule used by the United States prior to 2007, with DST beginning on the first Sunday of April and ending on the last Sunday of October.^[2] Although the United States changed the schedule for DST beginning in 2007, only certain municipalities located less than 20 km from the border adopted this change.