Legal time is the official time chosen by a government (or other government agency) to be in effect permanently or temporarily in a particular country or its administrative region, which may or may not coincide with the time zone in which it is located. In 1996, the European Parliament regulated summer time and stipulated that the Member States of the European Union should enter summer time in the early hours of the last Sunday in March and return to winter time early in the morning of the last Sunday in October. [1] The exact time in Angola is calculated according to the time zones of Angola, we will always try to inform you as accurately as possible of the time in Angola. There may be changes in the exact time of Angola, depending on the season of the year in which the city is located. The time change in Angola takes place to adapt the activities of the local population and tourists visiting Angola to the cycle of sunlight, so that electricity is saved. For these reasons, there is a time change in Angola in summer and another in winter. By increasing daylight saving time in the afternoon, trade, tourism in Angola, sports and other activities that promote the presence of light after the working day will be encouraged. The accuracy of the legal time in Portugal is guaranteed by the Lisbon Astronomical Observatory (OAL), which also has the power to announce it publicly under the authority of the State. The Director of the OAL is Chair of the Standing Committee of the Day, an advisory body on the issue of legal time. On the same day, Madeira abandoned the average time of Funchal (TMG-1:07:36) and resumed the time TMG-1, and the Azores changed the average time of the garden (TMG-1:54:32) to the time TMG-2. In 2009, a quartz watch was networked with OAL atomic clocks via a Network Time Protocol (NTP) system to ensure the accuracy of the legal time. Between the end of September 1992 and the end of March 1996, the government of cavaco silva decided that Portugal should have the two-way regime of Central Europe clockwise (UTC+1 in winter and UTC+2 in summer), which was abandoned by decision of the government of António Guterres because it was completely incompatible with its geographical location and caused enormous social and social problems. Health.
Given that there was a gap in terms of solar weather of +1h30 in autumn-winter and +2h30 in spring-summer period. At the beginning of winter, the sun rose at 9:00 a.m. and in early summer only at 10:45 p.m. On January 1, 1912, by order of the Republican government, the legal time of mainland Portugal ceased to be the Lisbon Average Time (TMG-00:36:44.68), which was close to solar time and had been in effect since 1878. Although most of the country is in zone -1, the government has chosen as the continent`s legal time what is called Greenwich Mean Time (abbreviated TMG or GMT, currently called Coordinated Universal Time or UTC), the time of time zone 0, defined by the meridian that crosses the Greenwich Observatory, near London, in England. and which convinced the International Conference of Meridians in 1884 as the principal meridian or international reference for the measurement of longitudes. Between 1942 and 1945, due to World War II, Portugal had one winter hour tmg, another hour tmg + 1 spring and another hour tmg + 2 hours summer, which was regulated by the legal existence of two summer periods. The clocks advanced by one hour on the night of March 14 to 15. Then they came back to advance 60 minutes on the night of April 25 to 26.
Finally, they reversed the first time on the night of August 15-16 and removed the 60 seconds on the night of October 24-25 to return to TMG time. Before the current radio signal and global positioning system existed, ships departing from the port of Lisbon had to adjust their stopwatches from edge to shore in order to accurately calculate their length on the high seas. In order to give the city, and in particular the ships anchored in the Tagus, the legal time, a guard chest was built in 1914 in the region of Cais do Sodré, equipped with a mechanical clock connected to the OAL in Tapada da Ajuda by an electric cable. From this watch case, a semaphoric system was installed along the coast to Belém to indicate the light of the time when it was anchored in the river. Between 1946 and 1965, he returned to the winter and summer time regime that existed before 1942. On June 17, 1916, the country introduced daylight saving time for the first time during World War I, after Germany and other belligerent countries, which lasted until November 1 of the same year. Since then, daylight saving time continued until 1941, except in 1922, 1923, 1925, 1930 and 1933, when standard time remained all year round. Between April 3, 1966 and April 26, 1966. In September 1976, Portugal was under the permanent regime dst (UTC+1 on the mainland, UTC on Madeira and UTC-1 on the Azores). From that moment on, the country reverted to an annual regime of two annexes, as was the case before 1966.
Mainland Portugal returned to TMG winter time from the last Sunday in September to the last Sunday in March. However, Madeira and the Azores have not returned to the normal hours (winter hours) they had before the 1966 amendment. In winter, Madeira adopted TMG time and the Azores adopted TMG-1 time, with a significant delay with the time zones in which they are located, TMG-1 and TMG-2 respectively. In March 1977, daylight saving time became TMG+1 in Madeira and TMG in the Azores, 2 hours before its sunshine hours. It`s very simple, you just need to copy and paste the following HTML code to where you want it to appear.
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