Peter Naur, Danish computer scientist, astronomer, and academic (born 1928)

Peter Naur was a Danish computer science pioneer and 2005 Turing Award winner. He is best remembered as a contributor, with John Backus, to the Backus–Naur form (BNF) notation used in describing the syntax for most programming languages. He also contributed to creating the language ALGOL 60.

January 3 is the third day of the year in the Gregorian calendar; 362 days remain until the end of the year.