Agenda - Day 3 (Thursday 15 October 2026)
Registration will be open for conference delegations and participants at the Palais des Congrès, Versailles, from 8 h 30.
Every session includes moments for discussion and questions.
| 9 h 00 | Challenges and future for Time metrology - LIVE STREAM SESSION | Moderator: P. Tavella (BIPM) |
| 1. New definition of the second | ||
| Challenges and achievements toward a new definition of the second | D. Calonico (INRIM, Italy) | |
| Possibilities for the new definition of the second | F. Fang (NIM, China) | |
| Introduction to Draft Resolution B Draft Resolution B "On the future definition of the second" |
N. Dimarcq (CIPM) | |
| 2. Continuous UTC | ||
| The upcoming negative leap second | D. Agnew (California University, USA) | |
| Video messages from partner organizations | ||
| Introduction to Draft Resolution C Draft Resolution C "On the technical actions needed to ensure the continuity of UTC" Report from the CCTF on Draft Resolution C |
N. Dimarcq (CIPM) | |
| 10 h 30 | Tea/coffee break | |
| 10 h 50 | 3. Time on the Moon | |
| Towards a Moon reference timescale | P. Defraigne (ORB, Belgium) | |
| Video messages from space agencies | ||
| Introduction to Draft Resolution D Draft Resolution D "On the definition of an international lunar reference time scale and its traceability to UTC" |
N. Dimarcq (CIPM) | |
| End of LIVE STREAM SESSION | ||
| 11 h 35 | Tea/coffee break | |
| 11 h 55 | Voting session | |
| Introduction of the voting session | F. Combes (CGPM President) | |
| Presentation of Draft Resolution V (BIPM Dotation 2028-2031) Draft Resolution V "On the dotation of the BIPM for the years 2028 to 2031" CGPM Working Document Impact of a flat dotation for the BIPM |
W. Louw (CIPM President) | |
| Voting on Draft Resolution V | F. Combes (CGPM President) | |
| Opening of voting on election of the CIPM (explanation and process) and Presentation of the procedure for the election of the CIPM and voting | R. Gunn (CEC Chair) | |
| Announcement of the results of the election of the CIPM | Independent scrutineer | |
| 13 h 10 | Lunch break | |
| 14 h 15 | Voting Session | |
| Voting on Draft Resolutions A and E | F. Combes (CGPM President) | |
| Voting on Draft Resolutions B, C and D | F. Combes (CGPM President) | |
| Voting on Draft Resolution F | F. Combes (CGPM President) | |
| Voting on the election of the CEC | R. Gunn (CEC Chair) | |
| Announcement of the results of the election of the CEC/Election Commission | Independent scrutineer | |
| Other business | ||
| 15 h 30 | Closure of the meeting |