![]() That was in 2016, and though those fish were saved, the fate of the species is far from certain. “This species would have been one step closer to extinction, and it’s not many steps away now.” Other studies found a higher rate of workplace injuries after the switch, leading to lost days of work a slight drop in stock market performance health problems as a result of disruption of the circadian rhythm (body clock) - and even longer sentences ordered by judges deprived of sleep.“If we hadn’t rescued these 64, this entire genetic population of Barrens topminnows would have disappeared,” Kuhajda said. One hour of lost sleep in the US, one study calculated, increases the fatal crash rate by 5.4% to 7.6% for six days following the transition. It quotes Timothy Morgenthaler, a sleep medicine researcher, as saying that disrupted sleep patterns might affect memory, learning, social interactions and overall cognitive performance.Īn article in Popular Science cites studies to list out the disadvantages of DST. Among the biggest cons is the disruption of the body clock or circadian rhythm.Ī USA Today report cites a study showing that DST increases the risk of heart attack by 25%, while a return to original times lowers the risk by 21%. Various studies have been conducted on the benefits and disadvantages of DST. But modern society uses so much energy-consuming appliances all day long that the amount of energy saved is negligible. □ Express Explained is now on Telegram So, has DST achieved its aims?Ī century ago, when DST was introduced, more daylight did mean less use of artificial light. However, the idea did not catch on globally until Germany and Austria introduced DST on April 30, 1916, the rationale being to minimise the use of artificial lighting to save fuel during World War I. Other locations in Canada soon followed suit. ![]() According to a report, it was followed by a group of Canadians on July 1, 1908, when residents of Port Arthur, Ontario, turned their clocks forward by an hour. The key argument is that DST is meant to save energy. (There is, however, a separate debate around the logic of sticking with only one time zone in a country as large as India.) India does not follow daylight saving time countries near the Equator do not experience high variations in daytime hours between seasons. How many countries use DST?ĭST is in practice in some 70 countries, including those in the European Union. In the US, clocks go back on the first Sunday of November. By law, the 28 member states of the European Union switch together - moving forward on the last Sunday of March and falling back on the last Sunday in October. During these months, countries that follow this system get an extra hour of daylight in the evening.īecause the spring to fall cycle is opposite in the Northern and Southern Hemispheres, DST lasts from March to October/November in Europe and the US, and from September/October to April in New Zealand and Australia.ĭates for this switch, which happens twice a year (in the spring and autumn) are decided beforehand. So, what is Daylight Saving Time (DST), and why do clocks in some countries “fall back” and “spring forward”?ĭST is the practice of resetting clocks ahead by an hour in spring, and behind by an hour in autumn (or fall).
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