Timetable in preparation for and during the General Assembly
This constitutes formal notice of the date and place of the General Assembly (Statute 5.3). The sessions of the General Assembly have been scheduled for the evenings of Wednesday 12 August, Thursday 13 August and Sunday 16 August 2026. The deadlines for proposals for amendments to Statutes, proposals for the agenda, receipt of reports and budgets from Commissions, etc., which are laid down in the Statutes and By-Laws of the IUCr, are as follows:
Timetable in preparation for Twenty-Seventh General Assembly
| 12 February 2026 | Proposals for amendments to Statutes to General Secretary (Statute 13.1) |
| 12 March 2026 | Estimated budgets from Commissions to Executive Committee (Statute 9.2) |
| 12 April 2026 | Proposals for agenda of General Assembly to General Secretary (By-Law 1.2) |
| 12 April 2026 | Proposals for amendments to Statutes to National Committees and Commissions (Statute 13.1) |
| 6 May 2026 | Reports of Commissions to General Secretary (Statute 8.4) |
| 3 June 2026 | Report of Executive Committee to National Committees and Commissions (Statute 6.8) |
| 3 June 2026 | Reports of Commissions to National Committees and Commissions (Statute 8.4) |
| 3 June 2026 | Budget to National Committees and Commissions (Statute 9.3) |
| 3 June 2026 | Agenda to National Committees and Commissions (By-Law 1.1) |
Timetable during General Assembly
| 'before' | Notice by National Committees to General Secretary of names of delegates, alternates and chairs of delegations, and of distribution of votes if not one per delegate (Statutes 5.6, 5.7). |
| 96 h | Nominations by Executive Committee for Officers of IUCr (By-Law 8.1) |
| 72 h | Recommendations by Commissions to General Secretary for Chairs and members of Commissions (By-Law 8.3) |
| 48 h | Nominations by Executive Committee for Chairs and members of Commissions (By-Law 8.3) |
| 48 h | Notification of motion to amend or suspend By-Laws (By-Law 9.1) |
| 36 h | Notice to General Secretary of nominations by delegates for Officers of IUCr (By-Law 8.2) |
| 24 h | Posting of nominations by delegates for Officers of IUCr (By-Law 8.2) |
| 24 h | Notice to General Secretary of nominations by delegates for Chairs and members of Commissions (By-Law 8.4) |
| 12 h | Posting of nominations by delegates for Chairs and members of Commissions (By-Law 8.4) |