National Argyle Day on January 8th celebrates the pattern derived from the tartan of Clan Campbell, of Argyll in western Scotland. The pattern has been used for kilts and plaids and the patterned socks (known as a tartan hose) worn by Scottish Highlanders since at least the 17th century. Each year it is recognized and honored on this day.
Occasionally you may find argyle spelled argyll.
Most commonly referred to as the overall pattern made of diamonds or lozenges, the word argyle sometimes indicates a single diamond in the design. Layers of overlapping motifs are found in most argyle layouts. The overlapping patterns add a sense of three-dimensionality, movement, and texture. Typically the pattern includes an overlay of intercrossing diagonal lines on solid diamonds.
The Duke of Windsor, a luxury knitwear manufacturer and importer, helped increase argyle’s popularity. Like many other manufacturers, the Duke used the argyle design pattern for golf clothing. Designers embraced the use of argyle on both jerseys and long socks as part of the plus-fours trouser fashion of the day.
Argyle knitwear became fashionable in the USA after the first world war.
U.S. Open and PGA champion, Payne Stewart (1957-1999) was known and loved by his fans for his bright and flashy outfits of tams, knickerbockers, and argyle socks.
Information from the National Day Calendar