Railway Board has approved the change in days of operation for four Express train services as detailed below:-
| Tr. No | From – To | Existing Days of Operation | Revised Days of Operation | With effect from |
| 17651 | Chengalpattu – Kacheguda | Tue, Wed, Sat & Sun | Wed, Thu, Sat & Mon | 04.10.2025 |
| 17652 | Kacheguda – Chengalpattu | Mon, Tue, Fri & Sat | Mon, Tue, Thu & Sat | 02.10.2025 |
| 17653 | Kacheguda – Puducherry | Wed, Thu & Sun | Wed, Fri & Sun | 01.10.2025 |
| 17654 | Puducherry – Kacheguda | Mon, Thu & Fri | Tue, Fri & Sun | 05.10.2025 |
| 17643 | Chengalpattu- Kakinada Port | Tue, Wed, Sat & Sun | Tue, Wed, Fri & Sun | 03.10.2025 |
| 17644 | Kakinada Port – Chengalpattu | Mon, Tue, Fri & Sat | Tue, Wed, Fri & Sun | 03.10.2025 |
| 17655 | Kakinada Port – Puducherry | Wed, Thu & Sun | Mon, Thu & Sat | 04.10.2025 |
| 17656 | Puducherry – Kakinada Port | Mon, Thu & Fri | Mon, Thu & Sat | 02.10.2025 |
*There will be no change in timings.
