Mexico City's Zocalo hosted Independence Day celebrations on Sept. 15 and 16. Many people arrived for the annual ceremony celebrating independence. The Zocalo is the capital's principal square. It became packed for the occasion. Telemundo and Univision were at the Zocalo and covered the ceremony live. The ceremony marks Mexico's independence. It drew crowds to the public square. Organizers prepared festivities for each day. The annual event is a major national occasion. The event ran on both days of the celebration.