Does anyone know if the #StarWars universe uses the #GregorianCalendar?

MT VOID #2355: Film reviews of #EvilUnderTheSun #2010MobyDick #TheAcidHouse; letter of comment on #Quatermass; book comments on #CaesarsCalendar #RepublicanCalendar #JulianCalendar #GregorianCalendar #DenisFeeney http://leepers.us/mtvoid/VOID1122.htm from @eleeper and #MarkRLeeper Tagged @scifi

It’s #CalendarAdjustmentDay, marking the day in 1752 when Britain and its colonies jumped forward 11 days overnight, to sync up with the Gregorian calendar. And you can celebrate by learning about the history and etymology of that calendar, in our video! https://www.youtube.com/watch?v=iSEfWDwvxWE

Is there some #genealogy software that does dates correctly?

E.g. user enters dates as recorded by authorities, but lets assume that a person moved from #Norway / #Denmark to Sweden in 1730. The records in #Norway / #Denmark would be in #GregorianCalendar, and the Swedish dates would be in #JulianCalendar. Assume that there are dates from the first decade of 1700s, when the #SwedishTransitionalCalendar was in operation and subsequently paused and abandoned, resulting in that February 30, 1712 is a valid date in #Sweden(!), and the other days being one day off from the Julian calendar.

Basically, all software seems to flag the date of 1712-02-30 as invalid, because it is impossible to specify the correct calendar.

And lets not get started about age calculations before new-year was moved to first of January (in many places this was well before the #Gregorian calendar introduction).