daylight saving time
daylight saving
daylight time
fast time
A way of keeping time in summer that is one or two hours ahead of standard time. Abbreviation DST.
Many places in the United States keep their clocks on daylight saving time in the summer; in this way people get up earlier and have more free time in the afternoon and evening while it is still daylight.
Father said that next week it will get dark later because we will change to daylight saving lime.
We go off daylight saving in the fall.