https://support.google.com/websearch?p=aimode

If you are referring to Daylight Saving Time (DST), it is the seasonal practice of setting clocks forward one hour in the spring and back one hour in the fall to extend evening daylight. If you instead meant the general productivity concept of time-saving techniques, it refers to shortening the time required to complete activities to maximize daily efficiency. Option 1: Daylight Saving Time (DST)

This system shifts human activity to better align with the sun’s seasonal changes. 7 Things to Know About Daylight Saving Time | Johns Hopkins