| Start of the First Round |
October 1, 2018 |
| SOI-Workshop Programming at EPF Lausanne |
October 13 – 14, 2018 |
| SOI-Workshop Programming at ETH Zurich |
October 20 – 21, 2018 |
| SOI-Workshop Programming at Uni Bern |
October 27 – 28, 2018 |
| SOI-Workshop Algorithms at EPF Lausanne |
November 2 – 4, 2018 |
| SOI-Workshop Algorithms at ETH Zurich |
November 9 – 11, 2018 |
| End of First Round |
November 30, 2018 |
| SOI Day |
January 5, 2019 |
| SOI-Camp in Sarnen |
February 10 – 16, 2019 |
| Second Round Theory |
March 9, 2019 |
| Second Round Practical |
March 15 – 18, 2019 |
| Helvetic Coding Contest |
April 13, 2019 |
| Swiss Finals |
May 17/18 & 24/25, 2019 |
| CEOI in Bratislava, Slovakia |
July 23 – 29, 2019 |
| IOI in Baku, Azerbaijan |
August 4 – 11, 2019 |