| 1 January 2021 | Abstract submission opens |
| 1 March 2021
| Registration opens |
| 19 April 2021 (Midnight BST) | Abstract submission closes |
| 30 April 2021 | Awards application closes |
| w/c 17 June 2021
| Abstract submission notification |
| 23 July 2021 (midnight BST) | End of early registration rate |
| 1 August 2021 | Deadline for Exhibition and Sponsorship application |
| 26 July 2021
| E poster & video submission upload opens (for accepted abstract submissions)
|
| 9 August 2021 | E poster & video submission upload closes |
| 20 September 2021
| Standard registration closes |
| 21 September 2021 onwards | Late/onsite registration
|
| 13 -15 October 2021 | ISHA 2021 |
