Greek Independence Day is a national holiday in Greece celebrated annually on the 25th of March alongside the Greek Orthodox Church’s Feast of the Annunciation to the Theotokos. The celebration commemorates the beginning in 1821 of the Greek War of Independence, also known as the Greek Revolution - η Ελληνική Επανάσταση του 1821.
To honour the Greek Independence Day, villages, smaller towns and cities throughout Greece hold a school flag parade, during which schoolchildren march in traditional Greek costume and carry Greek flags. In certain cities, there is also an armed forces parade.
Educational resources here, here and here.
Απολυτίκιο Ευαγγελισµού της Θεοτόκου: here.
Software in English here.
Photo on the left:
The sortie of Missolonghi, oil on canvas by Theodoros Vryzakis, 1855