Here are the Seasonal Events and Other events in Final Fantasy XIV They have summer event , winter event , hallowed event, etc. But they make up their own Lore and Names in the game for the events , it's very simple to do . Destiny is set thousands of years in the future, so there are multiple ways they can work in seasonal and holiday events into the Lore without offending anyone , and give them interesting Names, and interesting quests and fun rewards