Christian feast day: Nicholas of Myra, and its related observances: Saint Nicholas Day, where Saint Nicholas/Santa Claus leaves little presents in children's shoes. (International)

Saint Nicholas Day, also called the "Feast of Saint Nicholas", observed on 6 December in Western Christian countries, and on 19 December in Eastern Christian countries using the old church Calendar, is the feast day of Saint Nicholas of Myra; it falls within the season of Advent. It is celebrated as a Christian festival with particular regard to Saint Nicholas' reputation as a bringer of gifts, as well as through the attendance of church services.

Saint Nicholas of Myra, also known as Nicholas of Bari, was an early Christian bishop of Greek descent from the maritime city of Patara in Anatolia during the time of the Roman Empire. Because of the many miracles attributed to his intercession, he is also known as Nicholas the Wonderworker. Saint Nicholas is the patron saint of sailors, merchants, archers, repentant thieves, children, brewers, pawnbrokers, toymakers, unmarried people, and students in various cities and countries around Europe. His reputation evolved among the pious, as was common for early Christian saints, and his legendary habit of secret gift-giving gave rise to the folklore of Santa Claus through Sinterklaas.

Santa Claus is a legendary figure originating in Western Christian culture who is said to bring gifts during the late evening and overnight hours on Christmas Eve. Christmas elves are said to make the gifts in Santa's workshop, while flying reindeer pull his sleigh through the air.

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