Holidays honor people or events. If you could create a new holiday, what person or event would it honor and how would you want people to celebrate it?

I love the Day of Aviation and Cosmonautics. I like to watch interesting films about space. I honor the cosmonauts who fly into space. I would make a new holiday in honor of Gagarin. I would make the holiday a day off. I would make a parade in honor of the astronaut. It seems to me that Cosmonautics Day of Gagarin could be like Day of Defender. I believe that flight in space is a great victory of science in our country. All developed countries fly into space. I want to fly into space, too, if I can. Flying into space is expensive, but I hope in the future space tourism will be cheap. I would like to fly to the Moon or Mars.