CET Daylight Saving Time refers to the practice of moving the clock forward by one hour during the warmer months in regions that observe Central European Time (CET). This typically starts on the last Sunday in March and ends on the last Sunday in October, allowing for more daylight in the evenings. The main goal of CET Daylight Saving Time is to make better use of daylight, which can lead to energy savings and increased outdoor activities. Countries that follow this system include Germany, France, and Italy, among others, all of which adjust their clocks accordingly during this period.