Question

At midday, when the sun is directly overhead, the AM value is ___________

Answer 1

Usually midday is defined as 12PM when only the sun is directly overhead so the meridian will be of PM not AM.

Thus the value of the AM value is invalid then only it is defined as midday and which is called as noon.

In that time alone the sun light will directly overhead.

Answer 2

There are 12 hours in a normal day.

The middle of the day is what is known as midday.

During this time the sun is normally overhead and the shadows are shorter than the way they are in the morning.

Midday   is the middle of the day when most people eat their lunch.

It is what is called noon.    

The time for midday is normally :

12 noon.