This was done by Gregory XIII, in a brief issued in March, 1582; he reformed the calendar, directing that the fifth day of October in that year be reckoned as the fifteenth.

The vernal equinox, which in the old calendar had receded to March 11, was thus restored to its true place, March 21.

The "new style" calendar is also known as the Gregorian, from its founder; the system adopted by Gregory was calculated by Luigi Lilio Ghiraldi, a learned astronomer of Naples.
[6] "And he shall be a wild man; his hand will be against all men, and all men's hands against him." [7] Joao de Barros, an official in the India House at Lisbon, wrote a history of Portuguese achievements in the Orient, entitled _Dos feitos que os Portugueses fixerao no descobrimento e conquista dos mares e terras do Oriente_ (Lisbon, 1552), _decadas i-iv_ (incomplete).

The other historian here mentioned is Jeronimo Osorio da Fonseca, bishop of Silves in Algarve; the book referred to is _De rebus Emmanuelis regis Lusitaniae_ (Olysippone, 1571).
[8] Afonso de Albuquerque (born in 1453, died in 1515) was perhaps the most celebrated among the Portuguese conquerors of India; he was the second viceroy of the Portuguese possessions there, and founded its capital, Goa.

From his letters and reports to King Manoel of Portugal a book was compiled by his son Afonso, entitled _Commentarios do Grande Afonso Dalbuquerque_ (Lisboa, 1557); see also W.D.