Okay, so St. John's Eve is a special night that happens every year on June 23rd. It's named after St. John the Baptist, who was a very important person in the Christian religion.
People all over the world celebrate St. John's Eve in different ways, but it usually involves bonfires, parties, and lots of fun! Some people even jump over the fires, which is a tradition that's been around for hundreds of years.
People also believe that St. John's Eve is a magical night where all sorts of strange things can happen. Some people believe that if you pick certain herbs on St. John's Eve, they will have special powers. Other people believe that if you stay up all night on St. John's Eve, you might be able to see fairies and other magical creatures!
Overall, St. John's Eve is a super fun and special night where people celebrate St. John the Baptist and have lots of fun with friends and family.