Mexico — three timezones, DST ended nationally in 2022
Mexico spans three timezones: Central (CST, UTC-6, most of the country including Mexico City), Mountain (MST, UTC-7, northwestern states), Pacific (PST, UTC-8, Baja California). Mexico ended nationwide DST in 2022 except for cities along the US border (Tijuana, Juárez, Reynosa) which continue to observe US DST to stay synchronised with cross-border business.