December 5th is the eve of St. Nicholas Day, a significant celebration in many European cultures where children leave out shoes or stockings for gifts, sweets, and treats from the generous 4th-century bishop who inspired Santa Claus, with traditions varying from Dutch Sinterklaas arriving by boat to German and Czech figures leaving gifts for good children (and coal for naughty ones).
https://www.almanac.com/st-nicholas-day