What is this time plan called dayilight saving time?

Answer 1

The plan gives us a later sunset so the daylight lasts longer. Doing so saved daylight hours so that during World War I, when it was implemented, war time production could continue later in the day, thus saving energy. In 1966, Daylight Savings Time became more uniform. It allows us to use less energy in the early evening by taking advantage of the longer daylight hours.

Answer 2

Daylight saving time is the practice of setting the clocks forward by one hour during the warmer months to extend evening daylight. It is typically used between spring and fall to make better use of natural daylight.