Adjust energy saving time

At 2am on the morning of March 11 (ie 14g on March 11, Vietnam time), the Americans adjusted the clock to an hour early. This annual adjustment is remarkable because this year it was done three weeks earlier than usual (on April 1) and will be held until November 4 (a week later than usual). before an adjustment back an hour.

This is a measure of the energy law signed two years ago to cut energy consumption and protect the environment because it will reduce America's nighttime lighting.

Two Senators Edward Markey and Fred Upton, who proposed the law, said that this measure would save about $ 4.4 billion in energy costs between now and 2020 and avoid having to build more. three large power plants. In addition, about 279 billion m ^{3 of} gas is also saved and minimized 10.8 million m ³ of CO2 emissions.

Earlier, the UK and Australia also conducted time adjustments to save time in recent years.

48 continental states of the United States spread over four time zones: East coast zone (EST), central zone (CST), mountainous zone (MST) and Pacific coast zone (PST). In addition, the United States has four time zones of Alaska, Hawaii, Samoa and Chamorro. East coast, where there are major administrative centers such as Washington, New York, Boston . less than 12 time zones in Vietnam.

Adjusting hours in an American company (Photo: AP)

THANH TUAN