They celebrate St Valentines day because on that day St Valentine was beheaded for Marrying christian couples in a pagan kingdom.
the main purpose of valentines day is to embrace the ones you love, and if you have nothing well, have a random party and invite random people you don't know!
Polish people celebrate Christmas and Easter. They also celebrate Constitution day, All Saint's day, and they celebrate their Independence Day in November.
22
People celebrate St.Patrick's Day for the Irish culture
Too many to count
Alot of people celebrate valentines day even me:)
Nothing
People celebrate teacher day because they want to thank their teachers for everything they do.
well they celebrate veterans day because they honor that day :D
people in Argentina celebrate Columbus and independence day
Next year (2010) (i think)
The whole of the Australian population celebrate Australia day.