A bit of trivia [1] linked from that discussion about Julian calendar still in use.<p>[1] <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Mount_Athos#Date_and_time_reckoning" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Mount_Athos#Date_and_time_reck...</a>