Dekapentaugousto

[pne]

Also known as, the day when Athens is empty since all Greeks are back in their ancestral village visiting their families.

Also known as Mariä Himmelfahrt, complete with Latin genitive, and in English as Dormition of the Theotokos or Assumption of Mary.

Comments

[pne.livejournal.com]

Greece may be a bit of a special case in that respect, since the Orthodox Church there switched almost whole-sale to the Gregorian calendar.

There are still a number of palaiimeroloyites (old-Calendar-ites) who think that was all blasphemy, but they're very small in proportion to the ones that follow the Gregorian calendar. (They still calculate Easter by their own rules, though, so it rarely falls on the same day as in the Roman Catholic church.)