12-Hour System and 24-Hour System

Time systems

12-hour system and 24-hour system

12-hour system

The 12-hour system uses a colon between the hour and the minute. The time of the day is also stated

24-hour system

The 24-hour system uses four digits with the hours mentioned

Example of 12-hour system

6:05 in the evening

Example of 24-hour system

1805 hours

6:05 p.m in word form

Five minutes past six in the evening

18:05 in word form

Eighteen zero five hours

Ante meridiem

Time represented as a.m is after midnight until before noon

Post meridiem

Time represented as p.m is after noon until before midnight

Example of 12-hour system and 24-hour system

8.25 a.m. = 0825 hours