Karthigai Deepam or Karthikai vilakkidu is a Telugu and Tamil Hindu, festival of Lights. The festival is observed in most Hindu homes 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 and pournami. This constellation appears as a group of six stars in the firmament in the shape of a pendant from the ear.