The change of schedule is normal in several countries. Colombia never does this because of its location on the Ecuador line, Thanks to this we have no marked changes of seasons. However; approximately 70 countries have time changes now, adjusting to summer, if they are in the northern hemisphere, or in winter, if they are in the southern hemisphere.
Those nations like the United States, Mexico or all of Europe, which are in the northern hemisphere, they will have to advance the clock one hour by these dates, And as October and November approach they will have to delay it the same amount of time.
In the case of the countries in the southern hemisphere, such as Paraguay, Chile and Australia, they will return their watch for an hour and will return to their current schedule at the end of the year.
Optimizing energy use is the main reason for these measures, Although in several territories they have been repealed. Every year, around these dates, it is debated whether it is practical and functional or not.
Let’s look at the changes throughout history on different continents.
United States
Americans this year will have to adjust their watch on Sunday, March 14, except for those in Hawaii, much of Arizona or the territories of Guam, Virgin Islands, Puerto Rico, and American Samoa, which do not change early.
Until Sunday, November 7, 2021, daylight saving time will be maintained. The change in EE. UU. It was conceived by Benjamin Franklin in 1784, and has had alterations since that date.
In 1919, for example, this time adjustment was repealed, although it was still recognized in some areas of the country.
Looking for synchrony in the clocks of the world is created, in 1966, the Law of the Uniform Schedule, which established the beginning of summer as the last Sunday in April and the end on the last Sunday in October, but countries were free to refrain from participating.
During the energy crisis, between 1974 and 1975, Congress extended summer time to save energy.
A new schedule adjustment was made between 1986 and 2006, when it was established that the adjustment would be made on the first Sunday in April and ending on the last Sunday in October.
However, everything changed with George W. Bush’s Energy Policy Act in 2007. Since that year, in the United States the summer begins on the second Sunday in March and ends on the first Sunday in November.
Mexico
For Mexicans, the time change will take a few more days. Daylight saving time begins this year on Sunday, April 4, at 2 am, exactly. This does not welcome the states in both the northern and southern ends of the country: Quintana Roo and Sonora.
In the case of residents in states bordering the United States, their time will change at the same time as in world power: being clearer, the second Sunday in March. Daylight saving time will end in Mexico on Sunday, October 31st.
South America
Only two countries in this region are implementing the measure. Those who live in Chile and Paraguay they have to be late one hour their clocks at midnight on Sunday 28 March. At this moment his winter schedule will begin.
Argentina, Uruguay and Brazil have historically tried, but they no longer do.
Europe
The European Commission proposed eliminating the time change in 2018, however, the measure is still in force. Therefore, those who are in France or in another country of the European Union will have to advance the clock one hour on Sunday, March 28 at 2 p.m.
Daylight saving time on this continent will be maintained until Sunday 31 October, when it will be delayed by one hour.
Central America
No country in Central America has this readjustment of clocks in its territories. Which means that in Guatemala, Belize, Honduras, El Salvador, Nicaragua, Costa Rica or Panama, they won’t have to adjust their watches.
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