Indian Ocean Ocean, ultimately reaching the coastal countries of East Africa. In 1497 Portuguese navigator Vasco da Gama rounded the Cape of Good Hope and became the first European to sail to India (with the help of an Indian sailor) and later the Far East. The European ships, armed with heavy cannon, quickly dominated trade. Portugal achieved pre-eminence by setting up forts at the important straits and ports. Their hegemony along the coasts of Africa and Asia lasted until the mid 17th century. Later, the Portuguese were challenged by other European powers. The Dutch East India Company (1602–1798) sought control of trade
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