Celebrating San Jacinto Day in 2021 Glorianne Quintero, Promotion Producer Tags: San Jacinto Monument, Houston, Texas. (Mary Hammel) Each year on or near April 21, people from all over visit the San Jacinto battlegrounds to witness the re-enactment of the famous fight. The tradition was canceled in 2019 because of pollution from a nearby fire and again in 2020 because of the coronavirus pandemic. This year, San Jacinto Battleground State Historic Site and the San Jacinto Museum of History are celebrating virtually with the premier of San Jacinto: A Lone Star Shines. The four-day event begins on April 19 and each day will feature a short digital film depicting scenes from the Battle of San Jacinto. The videos post at noon on Facebook.