"The Night Before Christmas," also known as "A Visit from St. Nicholas," is a famous and beloved poem that has become a holiday tradition in many households. It was written by Clement Clarke Moore and was first published anonymously in 1823.

The poem is known for its vivid imagery and has played a significant role in shaping the modern-day image of Santa Claus. The poem tells the story of a man who, on the night before Christmas, is awakened by a clatter on the roof. He looks out the window and sees Santa Claus, often described as a plump, jolly, and bearded figure, arriving in a sleigh pulled by reindeer.

Santa enters the house by way of the chimney and proceeds to fill the stockings hanging by the fireplace with toys, candy, and other gifts. The poem is famous for its description of Santa Claus, his reindeer, and the magical nature of the Christmas Eve visit.

The reindeer are named, including Dasher, Dancer, Prancer, Vixen, Comet, Cupid, Donder (sometimes spelled as Donner), and Blitzen, along with the most famous of all, Rudolph, who is not mentioned in the original poem but later became a popular addition to the folklore.

The poem concludes with Santa wishing everyone a "Merry Christmas to all, and to all a good night!" This iconic line has become synonymous with the holiday season and is often recited during Christmas celebrations.

"The Night Before Christmas" has been adapted and illustrated in countless ways over the years, making it a cherished and enduring part of Christmas culture. It captures the magic and anticipation of the Christmas season and has been read to children and families for generations.