Daylight savings, also known as daylight saving time (DST), is the practice of advancing clocks by one hour during the warmer months, typically in spring and summer, to make better use of the longer daylight available. This means that the clock is set forward by one hour in spring (losing one hour of sleep that day) and set back by one hour in autumn, allowing evenings to have more daylight and mornings to have less. The goal is to shift the daily activities to better align with daylight hours, providing more daylight during the evening when people are active and reducing the need for artificial lighting. This practice is common in many countries to save energy and maximize daylight use in waking hours.