| Special Session Proposal Deadline | October 9, 2018 |
| Short Course / Workshop Proposal Deadline | November 16, 2018 |
| Paper Submission Deadline | January 18, 2019 |
| Exhibitor/Patron Rate Increase | March 30, 2019 |
| Author Registration Deadline | April 7, 2019 |
| Hotel Registration Deadline | June 13, 2019 5:00 pm Eastern Time |
| AP-S/URSI 2019 | July 7–12, 2019 |