Labour Day in Portugal honors the achievements and rights of workers. It has roots in the international labor movement advocating for the eight-hour workday. Banned during Portugal's dictatorship, it regained importance after the Carnation Revolution of 1974, symbolizing both workers' freedom and democracy.

May Day in Gibraltar combines the spirit of International Workers' Day with a springtime festival for the whole community. It honors workers' rights and social unity, while also featuring live entertainment, family activities and cultural performances.

Labour Day in Mexico honors the contributions and struggles of workers across the nation. It commemorates the fight for fair labor conditions, inspired by global labor movements such as the Haymarket affair of 1886. In Mexico, the day reflects the country's strong workers' rights tradition, which enshrined key protections like the eight-hour workday and the right to strike.

Labour Day in Morocco honors workers' rights and social progress, featuring parades, union gatherings, and speeches across the country that highlight solidarity, equality, and the dignity of labor.

Labour Day in Albania honors the contributions and rights of workers, featuring marches, gatherings, and cultural events that promote solidarity, fair labor practices and social progress across the nation.

Labour Day in Latvia honors workers’ contributions and the value of fair labor. It also marks the arrival of spring, blending social recognition with festive gatherings, concerts, and community celebrations across the country.

Labour Day in Serbia is both a recognition of the international labor movement and a national holiday of rest and celebration, marked by family picnics, cultural events, and occasional union demonstrations.

The Day of Madrid commemorates the 1808 uprising, a pivotal moment when ordinary citizens resisted Napoleon’s occupation. Though suppressed, it became a lasting symbol of freedom and regional pride, and since 1983 it has also represented the autonomy of Madrid within Spain.

Constitution Day in Poland commemorates the adoption of the Polish Constitution of 1791, the first modern constitution in Europe and the second in the world after the United States. It symbolizes Poland's commitment to freedom, democracy, and national unity. Today, it is one of Poland's most important national holidays, marked by patriotic parades, concerts and ceremonies across the country.