A final version of the ICOS 2021 programme has been published on the congress website: https://icos2020.ijp.pan.pl/programme (you may need to refresh the page). Please be sure to read it before the test connection and the conference. The programme includes a time zone table, where you can compare your local time with time zone for Krakow, Poland (UTC+02:00, CEST) used in the programme.