Slava is a special day for families in some countries like Serbia, Montenegro, and Bosnia. Think of it like a birthday for the family's patron saint.
Each family has a patron saint, which is a special person who is believed to protect them and their household. Just like how you have a favorite superhero or character that you like, families have a favorite saint.
On the day of the slava, families will prepare special foods and have a big meal with their friends and family. They will also have religious service to honor and give thanks to their patron saint.
It's a really important and special day for families to come together and celebrate their faith and traditions.