Most people quite literally live by a clock. We eat, sleep, work, and play according to the passage of time. Clocks tell us when to get up in the morning and what time to get to work or school.
Our awareness of time starts at a young age. Parents put their toddlers in time out when they misbehave. Young school age children are told when it’s time to get ready for school and when school gets out.
A few years into grade school, kids learn to tell time on their own using analog clocks. From then on, they use clocks every day to measure the passage of time.