In the 12-hour system, 10:00 can be represented as 10:00 AM. This system divides the day into two 12-hour periods, denoted by AM (ante meridiem) for the first half and PM (post meridiem) for the second half. The practical use of this system is to distinguish between morning and afternoon/evening hours.

Converting 10:00 to 10:00 AM helps individuals understand whether the time is before or after noon, providing clarity in communication and scheduling. It is crucial for avoiding confusion and ensuring that appointments, meetings, or events are scheduled accurately. Utilizing a standardized time format like the 12-hour system enhances efficiency in various fields, including transportation, healthcare, and business.