What is so special about Margazhi?

The month of Margazhi (Margasirsh in Sanskrit) or Danur masam of the Hindu calendar is considered extremely holy. Shivas ArudraDarshan comes in this month. Vaikunda Ekadasi comes in this month. Aandals Tiruppavai and Manikkavasagars Tiruvempavai is chanted during this month. Music stands tall. Temples have special... show more The month of Margazhi (Margasirsh in Sanskrit) or Danur masam of the Hindu calendar is considered extremely holy. Shivas ArudraDarshan comes in this month. Vaikunda Ekadasi comes in this month. Aandals Tiruppavai and Manikkavasagars Tiruvempavai is chanted during this month. Music stands tall. Temples have special early morning pooja (Ushat Kala Pooja). In Bagavadgita Krishna himself says, Masanam Margaseersho Asmi. What is so special about this month. Can anyone throw light?

Leaving behind Hinduisim, Christmas and the Christian new year falls within this month. Bakrid of Islam comes within this month. Buddhists, Jains and also Sikhs consider this month Holy. Some tribes have their Harvest Fest within this month. Many countries celebrate various traditional fest during this month. Why this month becomes special?
Update: I understand that it is special and so gave the highlights. I want to know why this month is so special. Any reason Behind it? Krishna says so. Krishna says he is the best among everything which means Margazhi is the best month, but why?
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