Dear Colleagues, The sixth spacetime conference will be held in the famous Black Sea resort "Albena" (near Varna, Bulgaria) from 12 to 15 September 2022: http://www.minkowskiinstitute.org/conferences/2022/ The Scientific Organizing Committee invites papers from physicists, philosophers of physics and philosophers on any topic related to the nature and ontology of spacetime. Contributed papers in the form of extended abstracts of between one and two pages should be emailed to 2020conference@minkowskiinstitute.org by July 15, 2022. Submissions will be reviewed and notification of acceptance will be sent by August 1, 2022. Scientific Organizing Committee: Valia Allori (Northern Illinois University) Robert Geroch (University of Chicago) Vesselin Petkov (Minkowski Institute, Montreal) Carlo Rovelli (Centre de Physique Théorique de Luminy, Marseille, France) Reinoud Jan Slagter (Astronomisch Fysisch Onderzoek Nederland and University of Amsterdam) Anguel Stefanov (Bulgarian Academy of Sciences) On behalf of the Scientific Organizing Committee, Vesselin Petkov Minkowski Institute http://www.minkowskiinstitute.org/ Montreal, Canada http://spacetimecentre.org/vpetkov/