The song was first performed on Christmas Eve 1818 at St Nicholas parish church in the small town of Oberndorf bei Salzburg, Austria.

At Christmas, Armenians greet each other with the words "Shenorhavor Dzenount".

Viscum album is a species of mistletoe in the family Santalaceae, commonly known as European mistletoe, common mistletoe or simply mistletoe. It is associated with Christmas as a decoration, under which lovers are expected to kiss.

"Here Comes Santa Claus (Down Santa Claus Lane)" was originally written and performed by Gene Autry, with music composed by Oakley Haldeman. Autry's original version was a top-10 hit on the pop and country charts; the song would go on to be covered many times in the subsequent decades by artists such as Doris Day, Elvis Presley, and Alvin and the Chipmunks.

"Feliz Navidad" is Merry Christmas in Spanish.

Slices of Christopsomo, or "Christ bread", are offered to the first beggar or stranger who comes to the house.

Set in Egypt, Verdi's Aida was commissioned by and first performed at Cairo's Khedivial Opera House on 24 December 1871.

"Silent Night" has been recorded by singers from every music genre. The version sung by Bing Crosby is the third best-selling single of all-time.

"On the tenth day of Christmas my true love gave to me ten lords a leaping."

What makes Eliot's verses especially memorable is that while they deal with a religious holiday, they speak to a very secular concern: our struggle to hold on to our inborn capacity for wonder, that same essential faculty that fuels both science and spirituality.