Mata Tirtha Aunshi", translated as "Mother Pilgrimage fortnight", falls in the month of Baishak dark fortnight (April/may). This festival falls in the dark moon’s time, which is why this called "Mata Tirtha Aunshi" derived from words: "Mata" meaning mother; "Tirtha" meaning pilgrimage. This festival is observed in the commemoration and respect of the mother, which is celebrated by worshipping and gifting living mother or remembering mothers who have become immortal and are resting in peace. Going to Mata Tirtha Pilgrimage located towards the Kathmandu valley’s eastern side at Mata Tirtha Village development committee’s periphery is another tradition common in Nepal.
There is a legend regarding this pilgrimage. In ancient times Lord Krishna’s mother Devaki walked out her house to sight-see. She visited many places and delayed a lot to return back at her house. Lord Krishna became very unhappy because of his mother’s disappearance. So he went out in search of his mother to many places without success. Finally, when he reached "Mata Tirtha Kunda", he happened to see his mother taking bath there in the spouts of that pond. Lord Krishna was very happy to find her there and narrated all of his tragedies in the absence of his mother. Mother Devaki said to lord Krishna that "oh! Son Krishna let then, this place be the pious rendezvous of children to meet their departed mothers". So legends believe that since then this place had become a noted holy pilgrimage to see back a devotees’ deceased mother. Also legend believes that a devotee saw his mother’s image inside the pond and he happened to die falling there down. So still there is a small pond fenced by the iron rods in the place even on this present day as well. After the worship the pilgrimage enjoy there singing and dancing throughout the day in the festive mood. There is not evidence of happening of this legend as these are coming from elders based on ancient readings.