12-Hour Format:Uses AM (morning) and PM (afternoon/evening) designationsHours range from 1 to 12Examples: 8:00 AM, 5:00 PM24-Hour Format:Uses a continuous 24-hour clockHours range from 00 to 23Examples: 08:00, 17:00Key differences:The 12-hour format requires AM/PM to distinguish between morning and afternoon, while the 24-hour format doesn't.The 24-hour format is often used in technical, military, and international contexts for clarity and precision.