On Wed, 8 Sep 2021, Tony Finch wrote: > It's even more funny than that :-) They actually went back to the Julian > calendar in 1712, and they needed to add back the leap day they skipped in > 1700; this extra day became February 30th. > > https://en.wikipedia.org/wiki/List_of_non-standard_dates#February_30 Oh, my sainted aunt... -- Dave