January 20 Holidays

National Cheese Lover’s Day celebrates cheese — the approximately 1,800 named varieties from French Brie and Italian Parmigiano-Reggiano to American Velveeta, all products of milk’s acidification and coagulation. Guru Gobind Singh Jayanti celebrates the birthday of the tenth Sikh Guru, Guru Gobind Singh — born December 22, 1666 — observed on the Nanakshahi calendar date in January, with prayers, kirtan, and langar. National DJ Day celebrates disc jockeys whose turntable craft of mixing, scratching, and beatmatching transformed recorded music into live art and seeded hip-hop and electronic dance music. National Coffee Break Day was established to celebrate the coffee break — the mid-morning or mid-afternoon pause that research links to restored concentration, reduced error rates, and improved worker satisfaction.