Administrative Dates & Deadlines

Please note that in case of a deadline on a particular calendar date, the time of the deadline is 11:59 PM clock time in the IAU office in Paris, France on that given date. In European winter, Paris clock time is UTC + 1 hour. In European summer, Paris clock time is UTC + 2 hours.

2026
December
Dec 16	Opening for Nominations for the Gruber Foundation Cosmology Prize for Next Year
2027
January
Jan 1	DEADLINE for Items Submitted to go on the OM Agenda
Jan 8	DEADLINE for Commission Organizing Committees to submit to parent Divisions/s a report on their activities along with recommendation as to whether the Commissions should be continued for another three years, or merged with one or more other Commissions, or discontinued. WGs and Divisions should also supply tri-annual reports along with Commissions by March 15th.
Jan 31	DEADLINE for Early-Bird Registration for the General Assembly
February
Feb 2	DEADLINE to Accept Applications for IAU Membership
Feb 15	Call to Division Membership for At-Large Steering Committee Candidates
Feb 15	Call to Commission Membership for At-Large Organizing Committee Candidates
Feb 15	DEADLINE for Division Presidents recommendations of Associates to become IAU Members submitted to the General Secretary
Feb 15	The General Secretary shall invite Division Presidents and the members of the Executive Committee to nominate potential members of the Special Nominating Committee (SNC)
Feb 15	Submission of Resolutions without Financial Implications
Feb 15	DEADLINE for Nominations for the IAU Astronomy Education Prize, the IAU Astronomy Outreach Prize and the IAU Astronomy Development Prize
Feb 21	Communication of Motions to Amend Statutes and Bye-Laws to the National Members
Feb 21	Submission to the General Secretary of Motions of a Scientific or Administrative Character without Financial Implications, to be Placed on the GA Agenda
Feb 21	Submission of Motions to Modify the Proposed Budget or Any Other Matters Pertaining to it, to the General Secretary (before the General Assembly)
Feb 28	GA Grant Submission Closes - SOC Evaluation Starts
March
Mar 1	DEADLINE for Items Submitted to go on the EC Agenda
Mar 15	Closure of Candidate Applications for Division Elections
Mar 15	DEADLINE for Approved Nominations for Individual Members to be Submitted to the IAU Secretariat by NCAs or Adhering Organizations and subsequently nominations are transferred to the Membership Committee
Mar 15	Triennial Reports due for Transactions from: Divisions, Commissions and WGs	AA-Country unknown
Mar 15	GS to send to the Finance Committee the 2026 Financial Report and the Auditor's Report