Friday, 30 January 2015

Q & A: AM and PM; what do they stand for?

Last year, during form 2 Ibn Kathir's Geography revision week, I gave the students a set of questions. They have to answer every question and ask if they got confused, could not find the answer in their book or do not know how to answer the questions.

One student asked about AM and PM; what do they stand for? I love it when my students ask questions like that.


Well anyway, this is the answer:

>AM stands for Latin 'ante meridiem' meaning 'before midday'.
>PM stands for Latin 'post meridiem' meaning 'after midday'.

From Wikipedia '12-hour clock':

"The 12-hour clock is a time convention in which the 24 hours of the day are divided into two periods:[1] a.m. (from the Latin ante meridiem, meaning "before midday") and p.m. (post meridiem, "after midday").[2] Each period consists of 12 hours numbered: 12 (acting as zero),[3] 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11. The 24 hour/day cycle starts at 12 midnight (often indicated as 12 a.m.), runs through 12 noon (often indicated as 12 p.m.), and continues to the midnight at the end of the day."


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