Second Call for Papers Fifth International Conference on the Nature and Ontology of Spacetime Date: 14-17 May 2018 Location: Albena (resort near Varna, Bulgaria) Website: http://www.minkowskiinstitute.org/conferences/2018/ Contact: 2018conference@minkowskiinstitute.org<mailto:2018conference@minkowskiinstitute.org> To mark the 110th anniversary of Hermann Minkowski's groundbreaking lecture "Space and Time" the main theme of the Fifth International Conference on the Nature and Ontology of Spacetime will be the nature of spacetime and time-e.g., whether spacetime should be interpreted in terms of an evolving present, or rather a block universe or perhaps a growing block? Despite that the focus of the fifth spacetime conference will be on the main theme, the Scientific Organizing Committee invites papers from physicists 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 by Wednesday, February 28, 2018 to 2018conference@minkowskiinstitute.org<mailto:2018conference@minkowskiinstitute.org>. Submissions will be reviewed and notification of acceptance will be given by Wednesday, March 21, 2018. Scientific Organizing Committee: Dennis Dieks (Utrecht University) Mauro Dorato (University of Rome Three) George F. R. Ellis (University of Cape Town) Robert Geroch (University of Chicago) Eleanor Knox (King's College London) Vesselin Petkov (Minkowski Institute, Montreal) Steven Savitt (University of British Columbia) Anguel Stefanov (Bulgarian Academy of Sciences) James Owen Weatherall (University of California, Irvine) Christian Wüthrich (University of Geneva)