The Month of Al-Hah and the Month of Mu'arram

The manta mu'arram is a very special month. It was chosen by rumul al-hahapab to be the first month of the calendar year. There were many opinions at the birth of the process about when should we begin our numbering system. One opinion said rama-ban because that's the holiest month. Another says dul-khad and another says sorry shawal shawal.