A public-holiday calendar records the days Mexico has set aside as statutory time off. National holidays apply nationwide; where an official regional or provincial list is published, those dates are included separately and clearly labelled rather than folded into the national figures. This calendar is a reference, not a legal determination of anyone's leave entitlement. Dates move for two common reasons: many countries observe a fixed-date holiday on the nearest working day when it falls at a weekend, and some observances follow lunar or other non-Gregorian reckoning that shifts against the everyday calendar. Regional holidays are always shown as regional and never added to the national count. The licence terms and the government producer behind each list are credited on the sources page.
Reading the table
The table gives the date a holiday falls on, the observance date when a weekend shift or substitute day applies, and notes published with the source. A Regional · <region> badge marks a holiday that applies only in that region; it is never counted as nationwide. Some countries publish both the original date and the observed date, so both are shown instead of silently adjusting one. Employers, schools, and individual workplaces may follow different calendars or grant extra days, so treat this table as a guide rather than an entitlement. For a wider comparison of why observance moves between countries, see why holiday dates differ between countries. The official source is always the final authority.
Where these dates come from
Mexico's federal statutory holidays come from the Diario Oficial de la Federación and the Ley Federal del Trabajo, reused under the terms for Mexican federal government information. The list covers the seven dates most employers observe, including Constitution Day, Benito Juárez's Birthday and Revolution Day, which are observed on a Monday rather than on their nominal date. That Monday rule is why those three dates move within a week of the anniversary; the observed date is what the table shows. State holidays are not included, because no reusable official state feed was identified. Mexico also has a presidential inauguration every six years that some calendars treat as a holiday, but it is not part of the federal statutory list. Changes come through the labour law or a decree, and the desk is rebuilt from the source. Because the Monday rule is fixed in the law, the observed dates can be predicted for future years. New Year's Day, Labour Day, Independence Day and Christmas are fixed dates, while the other three move to a Monday.