While Vaiko celebrated the birth anniversary of Prabhakaran at a village in Tirupur District, Nam Tamilar Katchi chief and film director Seeman cut a cake here.
Vaiko will also cut a cake in Erode at 7.30 pm,coinciding with the time of birth of Prabhakaran, partymen said.
Vocal pro-Tamil leader Pazha Nedumaran observed the anniversary of Prabhakaran, whose outfit is banned in the country, by planting a sapling at Thanjavur.
Other pro-Tamil leaders like Kolathur Mani have issued greetings messages on the occasion.
Prabhakaran was killed by the Sri Lankan armed forces in 2009, ending decades of civil war in the island nation.