Portuguese colonization of the Americas on 22 April, Cabral landed on the coast, in Porto Seguro. Believing the land to be an island, he named it Ilha de Vera Cruz (Island of the True Cross). The previous expedition of Vasco da Gama to India already recorded several signs of land near its western open Atlantic Ocean route, in 1497. It has also been suggested that Duarte Pacheco Pereira may have discovered the coasts of Brazil in 1498, possible its northeast, but the exact area of the expedition and the explored regions remain unclear. On the other hand, some historians have suggested that the Portuguese may
Time in Portugal to work under a completely dark sky and at 9:00, when school classes started, the sun was still rising, which eventually had repercussions on students’ school performance and their safety during morning trips from home to school.<ref name="Decree-Law 309/76"> Decree-Law 309/76, 27 April 1976 (in Portuguese). Retrieved 12 May 2013.</ref> Furthermore, in the 1970s, the idea of reintroducing DST as an energy saving measure gained strength in Europe as well as in Portugal. However, although there were so many complaints in the country with the use of year round, it became clear to policymakers that if DST was to be