30 July 2021 – pre-registration
30 July 2021 – sending a 1-page paper for the conference in….
31 July 2021 – admission for the conference
15 August 2021 – conference entrance fee
31 August 2021 – information about the conference programme
6 September – submit full papers
13-15 September 2021 – the Conference WZEE 2021 in Rzeszów