谁能帮我翻译一下这句话?daylight saving time是什么意思?

问题描述:

谁能帮我翻译一下这句话?daylight saving time是什么意思?
Most western nations advance the clock ahead one hour during thesummer months. This period is called
daylight saving time.

大多数的西方国家夏季通常把钟向前调一个小时.这叫做夏时制.
daylight saving time就是“夏时制”
这句话应该出自一篇英文阅读,我以前做过,英语老师讲了半天