| Part I - 10 April 2025 (10:00 - 12:00 UTC) |
| | 1. | Opening and welcome | |
| 10:00-10:05 | 1.1 | Opening by Chair and Vice-Chairs | E. Andersson, J. Sugier and S. Boukabara |
| | 2. | Progress since ET-EOSDE-3 and review of the actions | |
| 10:05-10:15 | 2.1 | Short report on the progress since ET-EOSDE-3 | E. Andersson |
| 10:15-10:45 | 2.2 | Thorough review of the actions and updates from all | All |
| | 3. | WIGOS vision update | |
| 10:45-11:15 | 3.1 | Information on the progress of the WIGOS Vision update group and discussion | S. Boukabara |
| | 4. | RBON - update and open questions | |
| 11:15-11:45 | 4.1 | Status of RBON implementation across the regions, discussion | J. Sugier |
| | 5. | GBON expansion – status | |
| 11:45-12:00 | 5.1 | GBON expansion - status | E. Andersson |
| |
| Part II - 11 April 2025 (10:00 - 12:00 UTC) |
| | 6. | RRR – status | |
| 10:00-10:30 | 6.1 | RRR execution (SoGs, Requirements updates, Variables and units changes, OSCAR/Requirements update), needed actions | R. Munro |
| | 7. | Update of the WIGOS regulatory and guidance material – refresher | |
| 10:30-10:40 | 7.1 | Planning overview | WMO Secretariat (K. Premec) |
| | 8. | HLG document (WMO—No. 1334) update and the survey | |
| 10:40-10:55 | 8.1 | HLG actions to be included into the WIGOS Manual and Guide | M. Gregoire, E. Andersson |
| 10:55-11:10 | 8.2 | How to deal with the survey results, organize follow-up survey? | M. Gregoire |
| 11:10-11:25 | 8.3 | Future of the HLG (purpose, title, etc.) | M. Gregoire |
| | 9. | Next meetings | |
| 11:25-11:45 | 9.1 | Info and planning of the next meetings (e.g., ET-EOSDE-5, SC-ON meeting, RRR online engagement workshop, ESAC Coordinators and PoC workshop, ET-EOSDE in-person meeting, Impact workshop) | All |
| 11:45-11:55 | 10. | AoB | All |
| | 10.1 | AOB campaigns | V. Lehmann |
| | 11. | Closure and actions | |
| 11:55-11:59 | 11.1 | New actions | E. Andersson, All |
| 11:59-12:00 | 11.2 | Meeting closure | E. Andersson |
