> No software project cares what the calendar looked like during the roman empire. Sure, its quirky that OCTober is month 10 instead of 8. Doesn't affect anythi

> No software project cares what the calendar looked like during the roman empire. Sure, its quirky that OCTober is month 10 instead of 8. Doesn't affect anything at all. Unless you're doing astronomy: * https://stellarium.org/doc/0.21/classJulianCalendar.html https://stellarium.org/doc/0.21/classJulianCalendar.html * https://en.wikipedia.org/wiki/Julian_year_(astronomy) https://en.wikipedia.org/wiki/Julian_year_(astronomy) * https://en.wikipedia.org/wiki/Julian_day https://en.wikipedia.org/wiki/Julian_day * https://squarewidget.com/julian-day/ https://squarewidget.com/julian-day/ > There is also a Julian date commonly used in astronomy, which is a serial date system starting on January 1, 4713 B.C.E. * https://support.microsoft.com/en-us/office/insert-julian-dates-functions-0c7fa6aa-daff-402e-9990-93a5b76ba018 https://support.microsoft.com/en-us/office/insert-julian-dat...