The "Panthrandu vilakku" festival celebrated at Oachira Parabrahma Temple is considered as the most reputed festivals of this temple. In the month of Vrishchikam, or Vrishchika Masam, is the fourth month in a traditional Malayalam calendar and is a highly auspicious month.Sabarimala Ayyappa Temple opens on the day for the two-month-long annual pilgrimage season. The first twelve days are celebrated as "Panthrantu vilakku"."Panthrandu vilakku" is being observed in temples with great fervour and enthusiasm to commemorate the ‘Ten Avatars of Lord Vishnu’ The Panthrandu vilakku celebrated at Oachira Parabrahma Temple is considered as the most reputed one At Ochira Para brahma temple, during "Panthrantu vilakku" pilgrims reside in hundreds of small huts for twelve days in the premises of temple following religious rituals. Thousands of people stays near a temple premises for a period of twelve days .This tradition is one of its kind in Kerala .Lakhs of people visit the temple during this period. There are various religious programs and meetings are being conducted during this period. Days are filled with speeches of Eminent scholars, religious leaders and political leaders. In the night cultural programmes of veteran artists are conducted. For pilgrims these days will be truly rejuvenating experience.