Portuguese discovery of the sea route to India of the "São Gabriel" and its sister ship, the "São Rafael" that were used by Vasco da Gama to sail past the Cape of Good Hope and continue to India. One of the sailors, Bartolomeu Dias passed the southernmost point of Africa known as the Cape of Good Hope in 1488. He declared it possible to travel to India by going around Africa. The Portuguese were then able to make an immense profit by using their own ships to retrieve the spices. This global expedition was launched on 8 July 1497. It concluded two years later with the entry of
Time in Portugal Empire: although almost all continental Portugal is located west of the 7.5°W meridian (i.e. in the theoretical zone of time zone), for mainland Portugal it was adopted as its time zone. By the same law, time zone was adopted for the Azores and Cape Verde, for Madeira and Portuguese Guinea, for São Tomé and Príncipe and São João Baptista de Ajudá, for Angola, for Mozambique, for Portuguese India and for Macau and Portuguese Timor. These time zones were adopted on 1 January 1912. Daylight saving time ("Hora de Verão", in Portuguese) was observed for the first time in 1916, during