The next upcoming St Nicholas Day is on Monday December 6th, 2021.
Christians celebrate this day by going to church or mass and with special attention to the giving of gifts including candy, cookies, and toys. St Nicholas Day is not a national federal holiday but rather an observance that celebrates church and gift giving.
This day falls on December 6th in Western Christian countries and December 19th in Eastern Christian countries. Santa Claus and Father Christmas all came about from Saint Nicholas, so Christmas would not exist if it were not for Saint Nicholas. St Nicholas was derived from a 4th century bishop called Nicholas of Myra who was known for gift giving.