Where I'm from, we celebrate the dead during a festival known as Obon. It's a three day festival that generally involves doing things like visiting the graves of your loved ones to clean them and give them offerings, visiting temples, and going to loud festivals that have a lot of food, games, and live performances. At some point, paper lanterns are usually floated down a river or stream. There's usually also some sort of fireworks display.

I guess it's a bit similar in some ways to the way your people honor the dead.