November 20

Observed on November 20, Argentina’s National Sovereignty Day honors the 1845 Battle of Vuelta de Obligado on the Paraná River. During this clash, Argentine forces resisted an Anglo-French blockade, asserting national sovereignty. The day was established in 1974 to celebrate Argentina’s right to self-determination and control over its waterways. Public ceremonies include flag-raising events, military displays, and cultural performances. It serves as a reminder of Argentina’s historical struggles to protect its territory and resources.

On November 20, 1910, Francisco I. Madero issued the Plan of San Luis Potosí, calling for an uprising against the Díaz regime. This proclamation ignited the Mexican Revolution, a decade-long conflict that reshaped the nation’s political and social landscape. Today, Mexicans celebrate the day with military parades, civic ceremonies, and school events. Since 2006, the holiday is observed on the third Monday of November, providing a long weekend. It honors the revolution’s principles of democracy, land reform, and social justice.

Teachers' Day in Vietnam, known as Ngày Nhà giáo Việt Nam, traces its origins to 1958 when students and teachers began commemorating the profession. On November 20 each year, schools and communities organize ceremonies, cultural performances, and expressions of gratitude to educators. Students and alumni present gifts, flowers, and heartfelt messages to honor their teachers. The day highlights the importance of education and the role of teachers in shaping the nation’s future. Celebrations across the country reinforce respect for the teaching vocation and inspire ongoing improvements in educational quality.