What is 15:30?

15:30 is a time in the afternoon, also known as 3:30 pm in the 12-hour clock system. It is halfway between noon and evening. In most parts of the world, it is considered a normal working hour and the end of regular business hours. It is also a popular time for afternoon tea or coffee break in some cultures. In the military, it is often referred to as "fifteen-thirty" and is used to designate a specific time for scheduled activities and commands.