Saturday day amount to be deducted in payroll

Hi Gurus,

I've requirement like I've created one unpaid absence

Here I'm getting doubt like that calendar days is not = Absence days, Kindly don't tell me like check counting rule because i did check several time's with different combination

Absence days are deducted in IT 2006

IT 0008

Normally deduction has to to done like 3000 Basic salary/31 days = 96.77 per day*29 days = 2806.

But system is showing like 3000/31=96.77*30=2903.

Kindly help me out.............!

Yours

Mohan