Most of countries have patriotic celebration. Celebrating certain days would tell how important it is. I think patriotic celebrations are really important.
If there weren't any patriotic celebration, it would make some problems. There are many people who sacrifice themselves to save own country. We are living in this world because of them. We should rethink about what they have done and appreciate it.
Also, learning histories in the book might be easier to forget. We should learn and keep think about what they have done. Even for our new generation, we have to celebrate for patriots. They will make future by learning past.