im pretty sure america only celebrates the 4th of July...cause thats when we celebrate our country gaining its independence from Great Britain. on july 4, 1776 we sighned the declaration of independence and ever since we've been a free country. GOD BLESS AMERICA!!!!!
In Greece march 25 is like an independence 日 since we celebrate the begining of the riot of 1821 when we were enslaved 由 the ottomans also October 28 when in 1940 we didn't let the Italian troops pass through our country and opposed the Italians and the Germans. In August 15 is a religious thing something I think the death of Mary 或者 something (I am not religious) but it is a big one and everyone celebrates.At some period at spring I don't know exactly cause it changes acording to easter we have a celebration called "apokries" which is something like 万圣节前夕 (people dressing in costume and stuff) expect that it lasts for a week 或者 so and it has nothing to do with the dead and the costumes are supposed to be funny not scary.I don't really know what we are celebrating...in the first of march we wear red and white threads and we wear them the whole 月 (It is supposed to be something about not getting burnt 由 the sun because march is the first 月 of spring) when we take them off we are supposed to hang them on trees I don't remember why I think it is connected to the returning of the migrating swallows making their nests here (weird I know). Also during march ssome days are warmer than the others and are called "Αλκυονίδες ημέρες" and it is something that has it's roots in ancient greece I don't see the point in celebrating that but they were pagans and god knows what they were thinking :P Maybe some of these are celebrated on other balcanic countries as well idk