
The Malayalam months are named after the Signs of the Zodiac. This date is ascertained with reference to Kali Dina Samkhya "Aachaarya Vaagbhadaa" as mentioned by "Paralpperu" or Katapayadi. There is also a possibility that it was in the honor of philosopher Adi Shankara's death, a new calendar was adopted in Kerala. But, it's generally agreed among the scholars that it was started with the reopening of the natural disaster destroyed city of Kollam on the Malabar coast. Some say that it was founded by the ruler of Venad Udaya Marthanda Varma (a feudatory with capital at Kollam) or by the Hindu philosopher Adi Shankara or simply it is a derivation of the Saptarshi Era. There are many theories about the origin of the calendar. The origin of the calendar has been dated as 825 CE. Malayalam calendar (also known as Malayalam Era or Kollavarsham or Kollam Era) is a solar and sidereal Hindu calendar used in Kerala, India. Kingdom of Calicut Venad Kolathunadu Kingdom of Cochin Kalabhra interregnum Sangam period Patiṟṟuppattu Ay kingdom Ezhimala Hill Keralavarma (Kulasekhara) Mukundamala Tyndis Jaffna Vellalar Cheraman Perumal Kandalur War Adi Shankara Medieval Chola Empire Kerala school Malayalam calendar Vazhapalli plates
