• 1º - August 21st, 1888 - The first successful adding machine in the United States was patented by William Seward Burroughs.
• 2º - William Seward Burroughs III (21 July 1947 – 3 March 1981) was an American novelist, also known as William S. Burroughs, Jr., and Billy Burroughs. He bears the name of both his father and his great grandfather, the original inventor of the Burroughs adding machine.
• 3ºa - 1888 - December 28 - F.W. Murnau, German film director (d. 1931) - > 4ºa -- Sunrise
• 3ºb - 1888 - June 13 - Fernando Pessoa, Portuguese writer (d. 1935)
• 4ºb - saudosismo
• 4ºc - Portuguese Poets
• 5º - Gil Vicente -----> English
• 6º - Portugal ------> Portuguese
• 7º - Distrito de Coimbra
• 8º - Coimbra
• 9º - Universidade de Coimbra