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
May
May 31		Communication to the SOC on the Final Selection of Focus Meetings
May 31		Communication to the SOC of the Final Selection of Symposia
June
Jun 7		Accepted Individual and Junior Members Announced
Jun 15		First Announcement of Symposia and Focus Meetings (GA Website and IAU Website)
July
Jul 15		Members who have been marked as 'Inactive' for 3 years will be removed from the IAU lists
September
Sep 1 - Feb 28		Abstracts and Grant Submission Open for the General Assembly - Submitters are automatically pre-registered at the early-bird fee
Sep 15		National Members are Invited to submit candidatures for Honorary Members
Sep 15		DEADLINE for Letters of Intent (LOI) for 2028 Symposia
Sep 15 - Feb 2		IAU Membership Application Process Opens
Sep 30		Letters of Intent Published
November
Nov 1		DEADLINE for Letters of Intent to Host the IAU General Assembly in 2033 to Reach the General Secretary
Nov 15		DEADLINE for Submission of Resolutions with Financial Implications
Nov 15		DEADLINE for Submissions of Motions to Amend the Statutes and Bye-Laws to be Submitted to the General Secretary
December
Dec 1		DEADLINE for Submission of Full Proposals for 2028 Symposia
Dec 15		Draft Budget to be Distributed by the EC to the National Members
Dec 15		DEADLINE for Applications for National Membership
Dec 15		DEADLINE for Nominations for the Gruber Foundation Cosmology Prize
Dec 15		DEADLINE for PhD Prize Application Submission
Dec 15		The Budget Committee shall submit, following consultation with the Offices and other relevant stakeholders as needed, a preliminary draft of the budget for the next triennium to the Finance Committee for review
Dec 16		PhD Prize Application Submission Opens for Next Year