![]() ![]() CET is based on solar time at 15° eastern longitude, which runs along the border between Germany and Poland. Today, most of the European part of France uses a time zone that does not adequately reflect the solar time on its longitude. In 1978, after having advanced its standard time by 1 hour to Central European Time in 1940, France adopted today's UTC standard. However, rather than officially adopting GMT as its standard time, the country now proclaimed PMT-0:09:21 as the name of its standard time zone. In 1911, France turned its civil time back by precisely that amount to synchronize its clocks with GMT. It was based on solar time in Paris, so local time in France was Paris Mean Time (PMT), which was 9 minutes and 11 seconds ahead of GMT. However, France continued to use its own standard for several decades. Back then, GMT was based on solar time at the prime meridian that runs through Greenwich, United Kingdom. In 1884, the international community adopted Greenwich Mean Time (GMT) as the world's time standard. Of France's dependencies, only Saint Pierre and Miquelon uses Daylight Saving Time. Time Zones Being Used in Dependencies of France Offset In the country's main part, Central European Time (CET) is used as standard time, while Central European Summer Time (CEST) is observed when DST is in force. Only the European part of France and the collectivity of Saint Pierre and Miquelon use Daylight Saving Time (DST). ![]() It will become active again after the next clock change as Daylight Saving Time begins or ends. The above time zone is used during other parts of the year. Time Zone Not Currently Being Observed in France Offset When Saint Pierre and Miquelon observes Daylight Saving Time, it even adds a 13th local time to the count. The remaining 11 time zones are added by France's dependencies ( France d’Outre-Mer). The main part of the country, France métropolitaine, which lies in central Europe and includes the capital Paris, spans only 1 time zone. With its 12 standard times, France currently holds the world record for the country with the most time zones, beating even the United States and Russia, which have 11 time zones each. Time Zones Currently Being Used in France Offset Business Date to Date (exclude holidays).No Daylight Saving Time in UTCĭaylight Saving Time (DST) is not used for UTC as it is a time standard for all time zones. However, many time zone boundaries are distorted by geographical and political factors. In theory, the UTC offsets countries use should reflect the local mean solar time. Two time components are added together to translate mean solar time to Coordinated Universal Time (UTC): International Atomic Time (TAI) measured by atomic clocks and Universal Time (UT1), the actual length of a day on Earth. For every 15 degrees of longitude east or west, mean solar time changes by 1 hour. Primarily, UTC is based on mean solar time at the prime meridian running through Greenwich, UK. The offset is expressed as either UTC- or UTC+ and the number of hours and minutes. All time zones are defined by their offset from UTC. UTC-Coordinated Universal Time-is the 24-hour time standard used as a basis for civil time today. The graph above shows that there is no clock change in UTC during 2024.
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