| Event | Date |
|---|---|
| Start of the first round | 15 September 2022 |
| SOI Workshops | October–November 2022 |
| End of the first round | 30 November 2022 |
| SOI Day | 14 January 2023 |
| SOI Camp | 11 – 18 February 2023 |
| Second round theoretical part (2T) | 4 March 2023 |
| Second round practical part (2P) | 10.–14. March 2023 (5h slot of own choice) |
| Finals | 11/12 and 26/27 May 2023 |
| EGOI in Sweden | 15 – 22 July 2023 |
| CEOI in Germany | 13 – 19 August 2023 |
| IOI in Hungary | 28 August – 4 September 2023 |