| Summer/AY2024 | 1/AY2025 | 2/AY2025 | |
| Deadline to Request for late payment Download form & mail to: mir@tu.ac.th | 13 May 2025 | 20 Jul. 2025 | 22 Dec. 2025 |
| Online registration | 19-23 May 2025 | 22-26 Jul. 2025 | 23-27 Dec. 2025 |
| Registration payment via TU Great App | 19-30 May 2025 | 22 Jul. - 1 Aug. 2025 | 23 Dec. 2025 - 2 Jan. 2026 |
| Classes begin | 7 Jun. 2025 | 16 Aug. 2025 | 10 Jan. 2026 |
| Add-Drop & Late registration | 2-8 Jun. 2025 | 4-17 Aug. 2025 | 5-18 Jan. 2026 |
| Add-Drop & Late registration payment | 2-9 Jun. 2025 | 4-18 Aug. 2025 | 5-19 Jan. 2026 |
| online withdraw (W) period | 10-29 Jun. 2025 | 20 Aug. - 12 Oct. 2025 | 21 Jan. - 14 Mar. 2026 |
| Last day of class | 19 Jul. 2025 | 7 Dec. 2025 | 26 Apr. 2026 |