You could add Events that happened years ago-- however be advised that Facebook will certainly show the day you uploaded it, as well as the day the Event took place.
Ịnwere ike ịgbakwunye ihe mere na afọ ndị gara aga - mana ka a gwa gị na Facebook ga-egosi ụbọchị ị deziri ya, yana ụbọchị ahụ merenụ.