The date this resource was imported from a source (pav:importedFrom). Note that pav:importedOn may overlap with pav:createdOn, but in cases where they differ, the import time indicates the time of the retrieval and transcription of the original source, while the creation time indicates when the final resource was made, for instance after user approval. This property is normally used in a functional way, indicating the first import date, although PAV does not formally restrict this. If the resource is later reimported, this should instead be indicated with pav:lastRefreshedOn. The source of the import should be given with pav:importedFrom. The agent that performed the import should be given with pav:importedBy. See pav:importedFrom for a discussion about import vs. retrieval. The value is of type xsd:dateTime, for instance "2013-03-26T14:49:00+01:00"^^xsd:dateTime. The timezone information (Z for UTC, +01:00 for UTC+1, etc) SHOULD be included unless unknown. If the time (or parts of time) is unknown, use 00:00:00Z. If the day/month is unknown, use 01-01, for instance, if we only know September 1983, then use "1983-09-01T00:00:00Z"^^xsd:dateTime.