Whether I'm talking about Deep East Texas, Texas Hill Country, West Texas, and all the other places across the Lone Star State, I'll gladly claim them all. National Texas Day is February 1stAccording to the National Day Calendar, February 1st is designated as National Texas Day. Even though we don't need a specific day to celebrate all things Texas, this is a day to review Texas history, Texas heroes, Texas attractions, Texas cuisine, Texas...EVERYTHING! How Can You Celebrate National Texas Day? There are tons of ways that you can celebrate National Texas Day.