Christmas Price Index chose the items in the popular Christmas carol "The Twelve Days of Christmas" as its market basket: a partridge in a pear tree, two turtle doves, three French hens, four calling birds, five gold(en) rings, six geese, seven swans, eight maids, nine dancing ladies, ten leaping lords, eleven pipers, and twelve drummers. According to tradition, the purchasing of the items begins on December 26 and ends on January 6. PNC compiles both a "Christmas Price Index" and "The True Cost of Christmas." The "Christmas Price Index" is calculated by adding the cost of the items in the song. The "True
The Twelve Days of Christmas (song) 1780 publication includes an illustration that clearly depicts the "five gold rings" as being jewellery. In 1979, a Canadian hymnologist, Hugh D. McKellar, published an article, "How to Decode the Twelve Days of Christmas" in which he suggested that "The Twelve Days of Christmas" lyrics were intended as a catechism song to help young Catholics learn their faith, at a time when practising Catholicism was criminalised in England (1558 until 1829). McKellar offered no evidence for his claim. Three years later, in 1982, Fr. Hal Stockert wrote an article (subsequently posted on-line in 1995) in which he suggested a similar