Important Dates

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• September 15, 2026: Early Bird Registration Opening

• March 5, 2027 (23:59 CET): Early Bird Deadline 

• March 6, 2027: Regular Registration Opens

• June 30, 2027 (23:59 CET): Regular Registration Deadline

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The registration for the Symposium is handled directly by the LOC at the IAU General Assembly (GA); the registration link below will therefore redirect to the official GA Registration form.