In our case we have all our dates from the Julian calendar.... this means when our site is pulling the dates of Scottish witchcraft investigations from Wikidata, even though they are in Julian calendar, they are auto converted to Gregorian and displaying as such. We could write a script to reconvert back to Julian calendar but this seems a) an unnecessary extra step and b) is additionally complicated given that the auto conversion only seems to apply to date precisions of DD-MM-YY and not MM-YY (month-year only precision , which is still returned as a full date - 1644-07-01T00:00:00Z) and nor YY (year only precision ,which is returned in format 1662-01-01T00:00:00Z). This added complication means we'd need to figure out how to write a script to handle the precision issue as many of the thousands of dates we are displaying have different precisions (historical dates such as these means we sometimes only have a year to go by or a month and a year but happily there are many also with the full day-month-year precision). The nature of the format that the queries returns gives no indication of the precision therefore is hard to the distinguish when the precision is MM-YY or when is actually the first of the moth (01-MM-YY). This complication makes it quite hard for a script to handle. Any input on a way forward would be beneficial as at the moment we are trying to work out how to undo the auto conversion (and handle all the precision exceptions) and display our dates in the Julian calendar as recorded.

When running a query that collects dates such as this one : https://w.wiki/6rSi (Collects the date of death of accused witches).