{{Infobox holiday |holiday_name = Karthika Deepam, Thrikarthika |type = Hinduism |longtype = |image = Karthigai Deepam.jpg |caption = Agal vilakku during the occasion of Karthika Deepam |official_name = |nickname = |observedby = Hindus of Kerala, Sri Lanka, Tamil Nadu, Andhra PradeshTelangana,Tamilians |significance = Formation of Murugan, Celebrating Goddess [[Katyayani]Bhagavathi in Kerala |begins = |ends = |date = |week_ordinal = |weekday = |month = Karthigai in Tamil Calendar, Vrishchikam in Malayalam Calendar |date2010 = 21 November 2010 |date2011 = 5 December 2011 |date2012 = 27 November 2012 |date2013 = 17 November 2013 |date2014 = 5 December 2014 |date2016 = 12 December 2016 |date2017 = 2 December 2017 |date2018 = 23 November 2018 |date2019 = 10 December 2019 |date2020 = 29 November 2020 |alt=|litcolor=|celebrations=|scheduling=|duration=|frequency=|firsttime=|startedby=|relatedto=}}