Cinco de Mayo is a celebration in the United States on the 5th of May. Mexico's Independence Day is different and separate from Cinco de Mayo, which is held in September.
Cinco de Mayo (Spanish for 'fifth of May') is a celebration held on 5 May. It is celebrated in the United States and regionally in Mexico, primarily in the state of Puebla, where the holiday is called El Da de la Batalla de Puebla (English: The Day of the Battle of Puebla). The date is observed in the United States as a celebration of Mexican heritage and pride, and to commemorate the cause of freedom and democracy during the first years of the American Civil War. In the state of Puebla, the date is observed to commemorate the Mexican army's unlikely victory over French forces at the Battle of Puebla on May 5, 1862, under the leadership of General Ignacio Zaragoza Segun. Cinco de Mayo is not Mexico's Independence Day, the most important national patriotic holiday in Mexico which is celebrated on September 16.
Contributions by Halda, Hajor, and Tawkerbot2.