Let us learn about 12-hour clock and the 24-hour clock

12-hour clock

There are 24 hours in a day and 12 noon divides a day into two time periods.
a.m -ante meridian before noon
p.m -post meridian ater noon
The 12 hours from midnight to noon are the a.m hour
the 12 hours from noon to midnight are the p.m hour

24-hour clock

In a 24 hour clock, the time interval from midnight to next midnight is divided into 24 hours counted from 0 to 24 .
The 24 hour notation is in the form hh:mm where hh stands for hour and mm stands for minutes