daylight saving time 
(also daylight time)
noun [mass noun] North American
Time as adjusted to achieve longer evening daylight in summer by setting the clocks an hour ahead of the standard time. Compare with summer time.Forget to set your clock for daylight saving time?...
- I know we have adjusted for daylight saving time, but we can still work out that Parliament starts at 2 o'clock.
- This weekend Australians will be changing their clocks to daylight saving time, with the usual ensuing confusion.
- ride one's luck
- ride (on) the coattails of
- rideout
- ride pillion
- rider
- ridered
- rideress
- riderless
- rider millstone
- ride roughshod over
- rider's bone
- ridership
- rider stone
- Ride, Sally
- ride-share
- ride-sharing
- ride shotgun
- ride skimmington
- ride someone down
- ride something out
- ride the clutch
- ride the pine (or bench)
- ride the rods (or rails)
- ride to hounds
- ride up