Regular time uses numbers 1 to 12 to identify each of the 24 hours in a day. With military time, the hours are numbered from 00 to 23. Minutes and seconds are expressed exactly the same way with military and regular time. It is not necessary to change anything regarding minutes and second when one switches from military time to regular time and vice versa. A military time chart is a tool that provides a clear and concise reference for converting military time to the standard 12-hour clock format. Although it is often used as a synonym for the 24-hour clock, and the two are closely related, they are not the same. The 24-hour clock is the world’s most widely used time format, while military time is only used in some contexts, such as the military and emergency services. Here are some rules for converting between the different time formats. Use a 12-hour military time format to convert 1800 military time to 12-hour time format. You can convert military time to civilian time for numbers after noon by subtracting 12 from the number. For example, if it’s 1800 hours in military time, you’d subtract 12 from 18 and get six. Here is a conversion chart converting regular time to military time and how you would read or say that military time. Below you can find a calculator to convert standard time to military time, military time charts and a printable version of the military time charts.