| Youth Camp |
September 7 – 14, 2019 |
| Start of the First Round |
September 15, 2019 |
| SOI-Workshop Programming at ETH Zurich |
October 12 – 13, 2019 |
| SOI-Workshop Programming at EPF Lausanne |
October 19 – 20, 2019 |
| SOI-Workshop Programming at Uni Bern |
October 26 – 27, 2019 |
| SOI-Workshop Algorithms at ETH Zurich |
November 1 – 3, 2019 |
| SOI-Workshop Algorithms at EPF Lausanne |
November 8 – 10, 2019 |
| End of First Round |
November 30, 2019 |
| SOI Day |
January 4, 2020 |
| SOI-Camp in Sarnen |
February 8 – 15, 2020 |
| Second Round Theory |
March 7, 2020 |
| Second Round Practical |
March 13 – 16, 2020 |
| Swiss Finals |
May 15/16 & 22/23, 2020 |
| CEOI in Nagykanizsa, Hungary |
June 29 – July 5, 2020 |
| IOI in Singapore |
July 19 – 26, 2020 |