Wikidata extends dates to include a precision: https://www.wikidata.org/wiki/Help:Dates#Precision https://www.wikidata.org/wiki/Help:Dates#Precision It's not q

Wikidata extends dates to include a precision: https://www.wikidata.org/wiki/Help:Dates#Precision https://www.wikidata.org/wiki/Help:Dates#Precision It's not quite perfect, since I often run into situations where I do know the precise day and month but not the year (bad scans etc.).