Time notation refers to the system used to represent time in a clear and standardized way. The most common formats include the 12-hour clock, which divides the day into two cycles of twelve hours, and the 24-hour clock, which runs from 00:00 to 23:59. These notations help people coordinate activities and schedules effectively. In addition to hours and minutes, time notation can also include seconds and time zones. For example, UTC (Coordinated Universal Time) is a time standard that helps synchronize clocks worldwide. Understanding time notation is essential for communication in various fields, including travel, business, and technology.