Czech Christmas traditions involve several activities in the weeks leading up to Christmas Eve, which is the main celebration. Families light Advent candles each Sunday in the four weeks before Christmas. On December 6th, St. Nicholas visits with sweets for good children and coal for naughty ones. People bake Christmas sweets and decorate their Christmas trees. Christmas Eve traditions include a meal of fish soup and fried carp, listening to carols, and opening presents brought by Baby Jesus. Old traditions like halving apples and floating nutshells aim to predict the new year.