Karthikai Deepam or Karthikai vilakkidu also known as Karthika Deepam (in Telugu ) is a Hindu specially Hindu Tamils and Hindu Telugu festival. The festival is observed in every home and every temple, and falls in the month of Kārttikai (mid-November to mid-December) as per Tamil calendar. This occurs on the day when the moon is in conjunction with the constellation Karthigai (Pleiades) and purnimai. This constellation appears as a group of six stars in the firmament in the shape of a pendant from the ear.
Many legends and lyrical poetry have grown round this star. The six stars are considered in Indian mythology as the six celestial nymphs who reared the six babies in the saravana tank which later were joined together to form the six faced Muruga. He is therefore called Karthikeya, the one brought up by the Karthigai nymphs. Houses and streets are lit up with rows of oil lamps (Deepam) in the evening of the festival day.
