| Feb 15 | IAU and LOC Travel Grants & Abstracts to be considered for contributed talks | |
| Feb 28 | AAS Travel Grants - for IAU members and invited participants residing in the U.S. | |
| Apr 30 | Early Registration | |
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May 15 | Deadline for receipt of all abstracts in final (latex) form |
| Jun 30 | Accommodations (Hotels and Tours) | |
| Jul 15 | Final Registration deadline by mail/e-mail/fax or/www |