Kekri is a very special holiday that is celebrated in Finland to give thanks for the good harvest. It happens every autumn, when the leaves on the trees turn all sorts of pretty colors and it starts getting colder outside.
So, just like how you say thank you for your birthday presents, Finns say thank you for all the food that they got from the harvest during Kekri. It's kind of like a big party where people dance, sing, and eat yummy traditional foods such as pork, potatoes, and turnips.
In the olden days, Kekri was celebrated for a whole week! But now, it's just celebrated on one day. People used to believe that during Kekri, the spirits of their ancestors would come and visit them. So, they would leave out food and drink for them to enjoy.
Overall, Kekri is a fun way for Finns to celebrate the end of harvest season and to show gratitude for all the good food that they received.