Nunes is from a New Christian family, Portuguese mathematician and professor. He is considered one of the greatest mathematicians of his time, and made his most important contributions in the field of navigation. His work meant a lot during Portugal's time of discovery.

Portugal Day (Portuguese: Dia de Portugal) is the day officially celebrated as a national holiday in Portugal, the Dia de Camões, de Portugal e das Comunidades Portuguesas (Turkish equivalent of Camões, Portuguese and Portuguese people's day).

The Rooster of Barcelos (Portuguese: Galo de Barcelos) is a legendary figure of Portuguese folklore, linked in particular to the city of Barcelos, in Minho (northern Portugal), but later became a symbol of the entire country, which is found in various souvenirs.
The legend tells of a Galician pilgrim who, while returning to Santiago de Compostela, was arrested and sentenced to death in the city of Barcelos on suspicion of stealing silver from a local landowner.
The condemned man, who proclaimed himself innocent, rushed to the judge with the intention of asking for pardon.
At that moment, the latter was having lunch, intent on consuming a roast rooster: the condemned man claimed to be sure of his innocence as he was certain that the rooster would rise from the plate to prove his innocence, but the judge obviously did not believed him.
However, just as the pilgrim was about to be hanged, the rooster got up and began to crow.The judge rushed to the place of the gallows and ascertained that the condemned man was still alive because the knot had not been tightened sufficiently.
Later the Galician pilgrim would return to Barcelos, where he would have carved the so-called Cruzeiro do Senhor do Galo, or the "crucifix of the lord of the rooster", a crucifix preserved in the local archaeological museum.