The term “A.M” had been defined for the “Ante Meridiem”. This had been introduced or derived from the latin word.This had been defined ‘the period before noon or midnight.It had been measured for the ‘Midday or Morning’ time.
They had been standing for the “12Hr timing period” over a day period of time. They had been defined in clock times majorly , to identify it proper measured calculations.
The term “P.M.” had also derived from the Latin word. The “P.M.” had been defined as “Post Meridiem”. It had been standing for the “noon or Night ” times. This had also preferred within the half timing of a day period
These forms are measured to define the time of a particular period. This had been based on specific value. As the day had been pertain for the “24Hours” skills.
The “A.m.” had been preferred for the starting 12 hr period and after that it had major for the “p.m.” 12hr timings.This had been measured in for the separation of definite period graphics. However , it had been managed within the International Timings.
For More and proper information , if it said the “11 ‘o’ Clock” , it would be difficult to define which period had been holding out but if I had preferred for the morning time of “11 ‘o’ clock’ then it would be known as “11.00 a.m.” …If the night times then it would be “11.00 p.m.”
From the above simplified matter we can understand the timing calculations.However , this is a dignified calculation of a period to manage our routine or daily work basis. They are induced to define day and night times. They take place between the exact time of half or 12 hrs variance.