Why do we have daylight saving time?

Daylight saving time ((also known as summer time in some places)) is to make better use of daylight

Also we have to change our clocks during this period of time (in the summer months. so we move and our of daylight into the night time (hint: we move out clocks and and our early so it would be something like this if it is 5:00 right now you would have to move it up an hour so it would be 6:00 instead of 5:00)

and in some countries they have change dates