eventDate for historical dataset

[ymgan]

eventDate is required term for OBIS and GBIF.

OBIS-OPI has dataset with BC record, which will result in negative date. Recommendations on how to populate eventDate requested.

If eventDate is absent, GBIF will still index the record.

obis-qc utilises Python's native datetime module is currently the limiting factor with MINYEAR = 1. So it needs a bit of work to support years <= 0.

Related issue:

• https://github.com/gbif/pipelines/issues/785
• https://github.com/tdwg/bdq/issues/84

[ymgan]

from meeting notes 2022-02-22

• OBIS QC checks that remove negative year needs to be updated
• no year 0 (there is year -1, 1 but no 0)

[ymgan]

[migrate from meeting notes 2022-09-15]

Difference between Gregorian and Julian date. Any date before 1582 CE is wrong, needs to be calculated.

Uses chronometric age extension to document historical dates

• Sometimes the date is qualitative
• No archaeological ages and geographical eras

[ymgan]

This was a task for Historical Data Project Team