The 35th IAS (International Association of Sedimentologists)  annual meeting will be held in the Czech Republic for the first time in the entire IAS history. The Institute of Geology of the CAS participates in the organization. The meeting will be held in June 23–25, 2020 in Vienna House Diplomat Prague hotel.  The total number of participants is expected between 700–1 000 including leading scientists in the field of  sedimentology.  Key themes and special sessions cover different processes leading to the origin of sedimentary rocks. Modern approaches and methods will be discussed which study sedimentary rocks as archives recording environmental changes in geological past, however, with implications for the present. All information is available at the Meeting website.