EFTF 2020, the 34th European Frequency and Time Forum will be held on 21-23 April 2020 at the Space Research and Technology Centre of the European Space Agency (ESA/ESTEC) Noordwijk, The Netherlands. The European Frequency and Time Forum (EFTF) is an international conference and exhibition, providing information on recent advances and trends of scientific research and industrial development in the fields of Frequency and Time.