Has @DAYS 360 function calculated differently between qtr and mon

[somthinls2]

I'm calculating interest in a spreadsheet and use this function to calculate
the number of days between dates. I have a quarterly calculation but was
asked to calculate monthly during the same period and have come up with a
difference in the number of days. How do I reconcile?

 

[Ron Rosenfeld]

I'm calculating interest in a spreadsheet and use this function to calculate
the number of days between dates. I have a quarterly calculation but was
asked to calculate monthly during the same period and have come up with a
difference in the number of days. How do I reconcile?

Start by posting examples of your data, formulas, actual results and desired
results.
--ron