Day light saving time is occurs twice a year where you turn your clocks an hour back for the winter and turn them an hour ahead for the spring. This is supposed to allow us to conserve time and energy. Studies show that day light saving time shows an overall increase in residential electricity. Back in World War I they took advantage of day light saving time to say electricity, coal etc. Benjamin Franklin was one of the first advocates for day light saving.
People can argue that it saves energy, some say it does some say it doesn't. It has a mixed effect on people's health, some people suffer different types of health issues because their bodies and minds have a hard time adjusting to day light saving.
I personally like dight light saving when we gain an extra hour of sleep but I don't like when it gets dark early.