Pithru tharpanam is a ritual done by every Brahmin who has lost is father in memory of his manes both on their father’s side as well as mother’s side . This is supposed to satisfy them and the word is derived from Thrupthi (satisfaction) . Brahmins believe that the water oblations offered by them reach the manes if they are in the Pithru Loka and even if they have taken re birth, it reaches them in the form that satisfies them. I have given the following tharpana manthras in English so that it can be used by people who do not know Sanskrit or their mother toungue. These people may be in a minority but should not some thing done for them.
1.Tharpana manthram for iyers http://brahminrituals.blogspot.in/2013/08/tharpana-manthras-iyers.html
2.THarpana manthras for Iyengars http://brahminrituals.blogspot.in/2013/08/thaprapana-manthras-iyengars.html
3.Bodhayana THarpana Manthras http://brahminrituals.blogspot.in/2011/12/bodhayana-darsa-tharpana-mantras.html
Regarding these the following clarifications are also given.
1. If there are more than one son to a parent, all of them are supposed to perform Tharpanas individually.
2. Commonly it is performed during Amavasya, Utharayana and Dakshinayana Punya kala and during the thula sankramam and Kadaka sankramanam and during eclipses , though our Sastras want us to perform it on 64 different occasions.
3. The Samkalpas which tell the manes that we are performing it in such and such a place and in such and such a time , mention that we perform it in BHaratha Varsha.Many people ask that when we do it in USA or Australia , how is it Bharata Varasha. It seems one great savant called California as Kapilaranya. Being not great I do not know how to do it, . But a very elderly and learned man told me , that wherever we are , we are mentally and spiritually in India only and so there is nothing wrong and telling that we are doing it in Bharata Varsha,
4. For the past 15 years , before the year beginning , I also publicise about the Sankalpam when Pithru tharpanam is done . Since I know that thereis a lot of time difference in places, I also tell in those sankalpas the time of the change of the Thithi and Nakshatra in Indian Standard time (IST). Very large number of people all over the world , use what I put and so this is one job that gies me immense satisfaction of having done something to my young and old Brahmin friends , who do not know Sanskrit or their mother toungue or do not have this information with them. This years sankalpams hae already been put in http://brahminrituals.blogspot.in/2015/03/tharpana-sankalpams-for-year-2015.html