Portugal has two time zones and observes daylight saving time. Continental Portugal and Madeira use UTC+00:00, while the Azores use UTC–01:00. Daylight
independence, during the existence of the Kingdom of Portugal, the country played a leading role in the Atlantic slave trade, which involved the mass trade and
westernmost point in continental Europe; its mainland west and south border with the North Atlantic Ocean; and in the north and east, the Portugal-Spain border
total of 1,215 kilometres (755 mi)). The Portuguese territory also includes a series of archipelagos in the Atlantic Ocean (the Azores and Madeira), which
with other goods and services. The major Atlantic slave trading nations, in order of trade volume, were Portugal, Britain, Spain, France, the Netherlands