The significance of Kartika Deepa has been emphasized : Ahead of each house, one should arrange a man size pole with the formation of a Deepa Yantra to facilitate the display of eight Deepas with a main deepa in the middle to signify a swing to let Shri Vishnu be seated and enjoy the oscillation ! The relevant Mantra would say: Damodaraaya nabhasi tulaayan dolayaa saha, Pradeepantey prayacchaami Namonantaaya vedhasey! ( May I offer a Deepa-like swing to Lord Ananta which would oscillate back and forth on the Sky in the form of an Akaasha Deepa or a Sky Light!). This symbolic Akaasha Deepa should last through out the Kartika Maasa, conveying the blessings of Vishnu the Creator of the entire Universe to one and all! .