That’s a good point! Hours of daylight and darkness are determined by season and location…not the clock on the wall. Interestingly, The U.S. tried permanent daylight saving time before, and it didn’t work out. In December 1973, Congress enacted a two-year trial of year-round daylight saving time in an attempt to reduce energy consumption. It lasted less than one year. Among the reasons for failure was concern about children going to school in the dark during the winter. For much of the country, sunrise would occur at 830am or later in winter under permanent DST.