negative date values not accepted

[tuurma]

Einige negative Zahlen werden im Feld 'Datierung' immer noch nicht akzeptiert.

can we please have examples that fail?

In dating fields you can use negative year values, e.g. -50, in general the format is year-month-day, where year can be also negative, e.g. -44-03-08

[tuurma]

reported for -27 and other numbers less than 30