Dates can be entered in regular “dd/mm/yyyy” format or in UTC format, either “yyyy-mm-dd” or “yyyy-mm-ddThh:mm:ss” or “yyyy-mm-ddThh:mm:ssZ”, according to norm ISO 8601. The difference between the latter two formats is that the first represents local time and the second UTC time. The norm allows you to specify hours respective to UTC by adding or subtracting. This particular format is not allowed in obsinfo. Separators can be either “/” or “-“.
Dates in other formats will result in an exception.
No effort is made to validate if dates are legal, i.e., to reject dates such as “31/02/2021”.