Dear Cheenu,
I hope you are mentioning, that you have missed to do the maasapirappu tarpanam?!
Nothing to worry,
Sriman Gopalan Sir given explanation in some other post as "doing only one time is also enough".

Dear you, Thanks for Visiting Brahmins Net!
JaiHind! Feel free to post whatever you think useful, legal or humer! Click here to Invite Friends