| 2/AY2024 | Summer/AY2024 | 1/AY2025 | |
| Deadline to Request for late payment Download form & mail to: mir@tu.ac.th | 16 Dec. 2024 | 13 May 2025 | 20 Jul. 2025 |
| Online registration | 23-27 Dec. 2024 | 19-23 May 2025 | 22-26 Jul. 2025 |
| Registration payment via TU Great App | 23 Dec. 2024 - 10 Jan. 2025 | 19-30 May 2025 | 22 Jul. - 1 Aug. 2025 |
| Classes begin | 18 Jan. 2025 | 7 Jun. 2025 | 16 Aug. 2025 |
| Add-Drop & Late registration | 13-26 Jan. 2025 | 2-8 Jun. 2025 | 4-17 Aug. 2025 |
| Add-Drop & Late registration payment | 13-27 Jan. 2025 | 2-9 Jun. 2025 | 4-18 Aug. 2025 |
| online withdraw (W) period | 29 Jan. - 23 Mar. 2025 | 10-29 Jun. 2025 | 20 Aug. - 12 Oct. 2025 |
| Last day of class | 11 May 2025 | 19 Jul. 2025 | 7 Dec. 2025 |