Which country write age 9 month when child born?

It's not a specific country that writes "age 9 months" when a child is born.

Here's why:

* Age is calculated from the date of birth. When a baby is born, they are considered 0 years old.

* Months are used to track the baby's age within that year. So, a baby who is 9 months old is still considered to be 0 years old.

Therefore, no country would write "age 9 months" when a child is born, as it's not an accurate representation of the child's age. Instead, they would record the child's date of birth.