All listed deadlines are intended as 23:59:00 Argentina Time (ART = UTC – 3h)

• 28-31 October 2024: First announcement

• 4 November 2024: Registration (in-person and online), abstract submission, and IAU Travel Grants application open

• 2 December 2024: Payment open

• 2 February 2025: Deadline for in-person early bird payment

• 24-28 February 2025: Second announcement

• 6 April 2025: Abstract submission and IAU Travel Grants application deadline

• Beginning of May 2025 (expected): Notification of the abstracts acceptance 

• Beginning of June 2025 (expected): Notification of the IAU Travel Grants acceptance

• 29 June 2025: Deadline for registration/payment (in-person and online)

• 4-9 August 2025: IAUS 401 start-end dates

• 28 September 2025: Deadline for proceedings submission