“Saved time” usually refers to Daylight Saving Time (DST), a seasonal practice where clocks are advanced by one hour during warmer months so that darkness falls later each day according to the clock. It can also refer to the concept of time management and efficiency, which focuses on optimizing schedules to free up a finite resource. Daylight Saving Time (DST)
The primary goal of shifting the clocks is to “save” natural evening light and extend outdoor daytime activities. 7 Things to Know About Daylight Saving Time | Johns Hopkins