Hi

I need a help with a formula where it take the reference of every 3rd cell from a row and add it in a different sheet.
Iam able to do this with chronological order but not with alternative cells.
I have shared the spread sheet link for reference. In this link you can find 2 sheets " receivables " & " this-day-that-month ".
I want to take the total sum of a cell ( which is in green color from receivables sheet ) and add it as per the date in this-day-that-month sheet.

https://docs.google.com/spreadsheets...it?usp=sharing

Can someone help me out getting this output !!!
Thanks in advance.

Balaji.S