On Saturday Oxi day is remembered in and outside of Greece, wherever Greeks live.
Oxi Day commemorates the day when Greek Prime Minister Ioannis Metaxas defiantly refused an ultimatum handed to him in the early hours of the morning on October 28, 1940, by the Italian Ambassador in Athens, Emanuele Grazzi. The ultimatum had come from none other than Benito Mussolini himself, the Italian dictator in Rome and a staunch ally of Adolf Hitler. The Axis Powers of Fascist Italy and Nazi Germany were already at war with the Allies, including Great Britain and its Commonwealth, France and Poland.
The ultimatum required free and unimpeded passage for the Italian army across the Greek-Albanian border to occupy strategic areas of Greece in the war against the Allies, already in its second year (from September 1939). Refusal would be seen as an act of complicity with the enemy.
Prime Minister Metaxas read the letter, calmly turned to the Italian Ambassador and issued the historic reply in French, the diplomatic language of the time: “Alors, c’est la guerre” (“Well, this means war”).
From then on, October 28 would be known as Ohi Day (“No Day”).
(source: https://www.greece-is.com/october-28-ochi-day/)
Around 11 o’clock dignitaries will walk down to the harbour in Skopelos town and wreaths will be placed on the war monument in the old harbour, a speech will be held and after that several school classes, the scouts and members from the cultural organization will parade on the harbour front. There will also be parades in Elios and Glossa/Loutraki.