Mexico City's Zocalo hosted Independence Day festivities on Sept. 15 and 16. Large crowds 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 provided live coverage. The celebration marks Mexico's independence. It attracted people to the central square. Organizers prepared festivities for both days. The annual observance is a top national observance. The event ran on both days of the celebration.