This report describes the current canonical time-series dataset named “Equinox2020,” a subset of Seshat: Global History Databank data for a well-curated list of polities and variables available on the Seshat Data Browser. The report provides an introduction to the methods and procedures of the Seshat project relating to the curation and release of the Equinox2020 dataset.

P. Turchin, D. Hoyer, J. Bennett, K. Basava, E. Cioni, K. Feeney, P. Francois, S. Holder, J. Levine, S. Nugent, J. Reddish, C. Thorpe, S. Wiltshire, H. Whitehouse, The Equinox2020 Seshat data release, Cliodynamics: The Journal of Quantitative History and Cultural Evolution 11 (1) (2020)