Standard time is the official time chosen by a government (or other governing body) to be in effect permanently or temporarily in a particular country or administrative region, which may or may not coincide with the time zone in which it is located. Between 1942 and 1945, due to World War II, Portugal had one tmg winter time, another tmg + 1 spring time and another tmg + 2 summer time, regulated by the legal existence of two summer time periods. The clocks were advanced by one hour on the night of March 14 to 15. Then they returned to advance 60 minutes on the night of April 25 to 26. Finally, they made the first reverse movement on the night of August 15-16 and withdrew the next 60 minutes – to return to TMG time – on the night of October 24-25. Typically, a country`s definition of legal time is based on its time zone in relation to Coordinated Universal Time (UTC), formerly known as Greenwich Mean Time (GMT) – time zone 0 – defined by the meridian with the same name as the prime meridian for longitude measurement in 1884. In this way, the legal time is to be solar adapted as much as possible, but it is not mandatory that this is the case. In 1996, the European Parliament regulated summer time and decided that Member States of the European Union should switch to summer time early in the morning of the last Sunday in March and return to winter time early in the morning on the last Sunday in October. [1] Before the radio signal and the current global positioning system existed, ships departing from the port of Lisbon had to adjust their on-shore chronometers to accurately calculate their longitude on the high seas.
In 1914, in order to grant the city and especially the ships anchored in the Tagus the legal deadline, a watchtower box was built in the area of Cais do Sodré, equipped with a mechanical clock and connected to the OAL in Tapada da Ajuda by an electric cable. From this guardhouse, a semaphoric system was placed along the coast to Belém to indicate the light of the time when it was anchored in the river. Between 1946 and 1965, it reverted to the winter time and daylight saving time regime that existed before 1942. Between the end of September 1992 and the end of March 1996, the government of Cavaco Silva decided that Portugal should have the Central European dual hourly regime (UTC+1 in winter and UTC+2 in summer), which was abandoned by decision of the government of António Guterres, because it completely departed from its geographical location and caused enormous social and health problems. Since 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 at the beginning of summer at 10:45 p.m. On January 1, 1912, by order of the Republican government, the legal time of mainland Portugal ceased to be Lisbon mean time (TMG-00:36:44.68), close to solar time, which had been in force since 1878.
Although most of the country is in zone -1, the government has chosen Greenwich Mean Time (abbreviated TMG or GMT, currently called Coordinated Universal Time or UTC), time zone 0, defined by the meridian that runs through the Greenwich Observatory. near London, England, and which convinced the International Meridian Conference in 1884 as the principal meridian or international reference for the measurement of longitude. On the same day, Madeira abandoned the Funchal mean time (TMG-1:07:36) and adopted the TMG-1 time, and the Azores changed the garden mean time (TMG-1:54:32) to the TMG-2 time. Article 2. Time changes are made by moving clocks from sixty minutes to 1 UTC on the last Sunday in March and moving them from sixty minutes to 1 hour UTC on the last Sunday in October. Qué hora es en?, tiene por objetivo convertirse en líder mundial en la prestación de las horas locales del mundo con los ajustes precisos para las reglas de verano local. Con esta opción te ofrecemos una forma de actualizar tu blog o página web con un reloj digital gratuito que muestra la hora en Madeira. Diferencia horaria, hora y fecha local en las diferentes zonas horarias. The accuracy of the legal deadline in Portugal is guaranteed by the Lisbon Astronomical Observatory (OAL), which also has the competence to announce it publicly under the supervision of the State. The Director of the OAL is Chairman of the Standing Committee of the Time, an advisory body on the issue of legal time. So if the clocks are running at 00:00 in the Azores, they should be moved forward by one hour and moved to 01:00 in the morning.
On the mainland and in Madeira, this procedure should not be followed until you have reached 1:00 am on Sunday. © 2022 · Privacy Policy · Terms of Use · Thanks/Sources · Legal Notice Sunrise or sunrise times in Madeira are at 08:14:35 and sunrise or sunset times in Madeira are at 19:29:05 Compare local time for two time zones, countries or cities around the world. Standard time is fixed in mainland Portugal by Legislative Decree No 17/96, 8 março, in the Autonomous Region of Madeira by Regional Legislative Decree No 6/96/M of 25 June and in the Autonomous Region of the Azores by Regional Legislative Decree No 16/96/A of 1 August.