The celebration of Pediatrician's Day is inextricably linked with the celebration of World Children's Day. Following the recommendations of the UN, most of the countries participating in this organization have established a celebration of World Children's Day, coinciding with the day of adoption of the UN Declaration of the rights of the child. This holiday is aimed at ensuring the well-being of children around the world, in many countries it is celebrated simultaneously with Pediatrician Day who stands for the protection of children's health from the moment of their birth. Pediatrics is the first to guard the child's health among all medical specialties. That is why both holidays go hand in hand in many countries of the world.