Mexico City's Zocalo welcomed Independence Day festivities on Sept. 15 and 16. Large crowds arrived for the annual Cry of Independence ceremony. 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 ceremony marks Mexico's independence. It drew crowds to the public square. Organizers planned events for each day. The annual event is a top national observance. The event ran on both days of the celebration.