Ayyappa Jayanthi, the Lord Ayyappan Jayanti, is observed on Painkuni Uthiram or Panguni Uthiram day which falls on Pournami or Full Moon day in Meena masam of Malayali calendar. In 2017, Ayyappa Jayanti date is April 9.
Lord Ayyappa is considered to be born out of the union between Mohini avataram of Lord Vishnu and Shiva. Hence he is called as Hariharasutha or Hariharasudan or Hariharaputhiran. Ayyappa is also known as Manikandan or Manikanta.
Devotees believe that Ayyappa was born to demolish the demoness Mahishi. After destroying her, the Lord has given her a boon that she will be worshipped as Maalikapurathamma.
In Sabarimala Ayyappa temple, Ayyappa Jayanti is celebrated with utmost fervor and attracts tens of thousands of devotees from all around the globe.
Panguni Uthiram is a big festival in Tamil Nadu. Several Temple festivals like divine marriages, brahmotsavams, aradhanotsavams and other festivities are celebrated on Panguni Uthiram. Madurai Meenakshi Sundareshwarar Temple, Srirangam Sri Ranganatha swamy temple, Palani Murugan temple, and some other temples dedicated to Lord Shiva and Lord Murugan attract millions of devotees during Panguni Uthiram festival.
In 2016, Ayyappa Jayanti date was March 23.
In 2015, Ayyappa Jayanti date was April 3.
In 2014, Ayyappa Jayanti date was April 13.
In 2013, Ayyappa Jayanti date was March 27.
In 2012, Ayyappa Jayanti date was April 5.