An hour is a unit of time that is commonly used to measure how long something takes. It is made up of 60 minutes, and there are 24 hours in a day. People often use hours to plan their daily activities, like going to work, attending classes, or meeting friends. In everyday life, we might say, "I'll be there in one hour" to let someone know when to expect us. Clocks and watches help us keep track of hours, making it easier to manage our time. Understanding hours is essential for staying organized and punctual in our busy lives.