King Philip II of Spain issues cedula, ordering a halt to colonizing efforts in Florida.

Philip II, sometimes known in Spain as Philip the Prudent, was King of Spain from 1556, King of Portugal from 1580, and King of Naples and Sicily from 1554 until his death in 1598. He was also jure uxoris King of England and Ireland from his marriage to Queen Mary I in 1554 until her death in 1558. Further, he was Duke of Milan from 1540. From 1555, he was Lord of the Seventeen Provinces of the Netherlands.

A cédula de identidad (Spanish), also known as cédula de ciudadanía or Documento de identidad (DNI), is a national identity document in many countries in Central and South America. In certain countries, such as Costa Rica, a cédula de identidad is the only valid identity document that can be used for certain circumstances, for example, opening a bank account as a driving license or passport is not valid. The term "cédula" may also colloquially refer to the number on the identity document.

September 23 is the 266th day of the year in the Gregorian calendar; 99 days remain until the end of the year.