San Jacinto Commemorative Ceremony, San Jacinto Battleground State Historic Site, LaPorte. Celebrate with us the 180th Anniversary of the Battle of San Jacinto at the official ceremony commemorating the battle. The ceremony will be held at 11:00am on the northeast side of the San Jacinto Monument terrace on Thursday, April 21st. This decisive battle of the Texas Revolution won Texas its independence from Mexico. Admission is free. For more information call (281) 479-2431 x234.