San Jacinto Day is celebrated on April 21 each year in Texas, commemorating the decisive battle of the Texas Revolution. On this day in 1836, the Texian army, led by Sam Houston, defeated the Mexican forces under Antonio López de Santa Anna at the Battle of San Jacinto. This victory secured Texas' independence from Mexico. The holiday is marked by various events, including parades, reenactments, and educational programs. It serves as a reminder of the struggle for independence and the importance of Texas history. San Jacinto Day is an official state holiday, allowing Texans to reflect on their heritage and celebrate their state's unique identity.