The main purpose of Daylight Saving Time (called "Summer Time" in many places in the world) is to make better use of daylight. We change our clocks during the summer months to move an hour of daylight from the morning to the evening. ... If you live near the equator, day and night are nearly the same length (12 hours).

Why did the time just change?

On Nov. 7, 2021, daylight saving time (sometimes erroneously called daylight savings time) will end again and we'll set our clocks back by an hour in those regions that observe DST. These fall and spring clock changes continue a long tradition started by Benjamin Franklin to conserve energy.

Why daylight savings time exists?

Daylight saving time ends at 2:00 a.m. local time on the first Sunday in November, when clocks fall back by an hour. The idea behind the clock shift is to maximize sunlight in the Northern Hemisphere, as days start to lengthen in the spring and then wane in the fall.