daylight saving time
summer time BrE

The bill will extend daylight saving time, beginning in 2007, by four weeks, to save energy.

Today, daylight saving time has been adopted by more than one billion people in about 70 countries.

Since 1974, after the 1973 oil crisis, daylight saving time has been observed every year.

The central government stopped using daylight saving time in 1992.

Businesses, however, have daylight saving time down to a system.

It will be 80 today, the first day of daylight saving time.

Later, they needed a daylight saving time to get the most out of summer's long days.

We should go on daylight saving time and stay there.

However, no daylight saving time has been observed since 1979.

When daylight saving time comes along, it even changes the hour automatically.