Mexico City does not put its clocks back on 25 October 2026. That date is Spain’s change. Mexican border locations with seasonal time require a city-specific check.
The capital and the border need different references
Do not mix Mexico City’s rules with seasonal time in applicable border locations. This guide and the linked Madrid comparison use America/Mexico_City only. Confirm the actual destination before reusing a schedule for another part of the country.
What Spain’s change does to a meeting
A meeting kept at 18:00 in Madrid appears at 11:00 in Mexico City on Monday 26 October. To preserve 10:00 in Mexico City, choose 17:00 in Madrid. State which city controls the local start time.
Checking a border destination
Use the official CENAM reference for the specific city. Do not adapt a Mexico City table by adding or subtracting an assumed hour without checking the local regime. The converter’s available city list does not include every Mexican zone.
Common questions
Can I use Mexico City as the time for Tijuana?
No. Confirm Tijuana’s own zone and official local rules.
Why does the Madrid–Mexico City difference change if Mexico City keeps its clock?
The difference is between two clocks. Moving Madrid’s clock changes that difference even if Mexico City does not move.
Sources and calculation
- CENAM · official time in Mexico
- BOE · Spain’s 2022–2026 clock-change calendar
- IANA · Time Zone Database
Tables are calculated using named IANA zones with Intl. Read the method, scope and limitations.