In the 24-hour system, 2:54am would be represented as 02:54. This system is commonly used in military, aviation, healthcare, and other industries for accurate timekeeping and scheduling. Converting time to the 24-hour format eliminates confusion between morning and evening hours. It facilitates global communication by providing a standardized time notation worldwide. Additionally, using the 24-hour system helps prevent errors in timetables, appointments, and transportation schedules.