About Agrahayana
Agrahāyaṇa or Mārgaśīrṣa, is a month of the Hindu calendar. In India's national civil calendar, Agrahāyaṇa is the ninth month of the year, beginning on 22 November and ending on 21 December. Since Vedic times, this month is known as Mārgaśīrṣa after the Nakṣatra Mṛgaśiras. In Tamil, the month is known as Maarkazhi.