By pure chance, I found out this weekend that there is something called "World Naked Gardening Day". There's really nothing that does not exist, right?
Apparently the aim of this day is to make people feel connected with nature, and get out (or do inside) gardening feeling the breeze on every spot of the body, and making the world a better and a bit greener place. It's always on the first Saturday in May, so it might still be rather cool outside...
If you want to learn more, you can find out about it on the official website https://wngd.org/
For me, I can tell you that this is definitely not a World's X Day that I will participate in - I am quite fond of coverage by clothing, especially when outside in the sun, where sunburn at this time of year can also be an issue...