Important Dates
| 01/08/2026 | THD T-Shirt Contest Deadline |
| February–March 2026 | Regional History Day Contests |
| 03/11/2026 | Texas History Day Registration Deadline |
| 03/11/2026 | THD Website Lockout |
| 03/11/2026 | Deadline for Registration and submission deadline for paper, website, and documentaries. |
| 04/11/2026 | THD Contest and Awards Ceremony |
| 06/14-18/2026 | National History Day |
