| Date | Location | Event |
| 2025 | ESO entities | |
| january fr 17 |
Brussels |
General Body |
| february pm fr 14 |
Executive Body |
|
| march fr 7 |
Brussels |
General Body |
| april fr 11 |
Brussels |
General Body |
| may fr 9 |
Brussels |
General Body |
| june fr 13 |
Brussels |
General Assembly |
| july/august | ||
| september pm fr 5 fr 12 mo 22 |
Brussels Brussels Antwerp |
Executive Body General Body ESO’s 50th Anniversary |
| october fr 24 |
Brussels |
General Body |
| november fr 21 |
Brussels |
General Body |
| december pm |
Executive Body |