The aim of this graph database system is to create and maintain a gazetteer of calendar dates in different calendar systems, initially those used in Greek and Roman antiquity across the mediterranean area. Like geographical gazetteers this authority list can be used to provide stable, unique identifiers (URIs) for each date in any of the calendar systems that has been used to refer to an astronomical day in any ancient source, whether literary texts, papyri, ostraca or inscriptions. It will serve as a means to search and browse ancient texts by their precise temporal footprint using these URIs in digital editions and databases or TEI/EpiDoc XML driven projects.
Where a clear system of conversions between different calendar systems has been established, dates will be converted algorithmically into (proleptic) Julian calendar and Julian Day Numbers. As more and more dates from antiquity are linked to the GODOT infrastructure, a complex knowledge graph of ancient dated objects and texts evolves.
This project is supported by the Andrew W. Mellon Foundation.