1990/12/20-1990/12/20

https://w3id.org/zericatalog/date/1990-12-20-1990-12-20 an entity of type: E52_Time-Span

1990-12-20-01-01T00:00:00Z 
1990-12-20-01-01T00:00:00Z 
1990/12/20-1990/12/20 

data from the linked data cloud