28th meeting of the CGPM

13 January 2026 – Publication of the Convocation for the 28th meeting of the CGPM.

On-line information and consultation meetings with Member State Representatives:

• Wednesday 4 March 2026
• Tuesday 2 June 2026
• Wednesday 9 September 2026.

CGPM week:

• Monday 12 October – Pre-Meeting at the BIPM headquarters for Member State Representatives
• Tuesday 13 October – Opening of the 28th meeting of the CGPM in Versailles
• Thursday 15 October – Close of the 28th meeting of the CGPM.