Formulla for Next Day Auto Change the Opening Cash Balance

r/ sir
please send the formula for next day auto change the opening cash balance please send the formula for current date (22-01-2015) opening cash balance is (12500) than less other expenditures for the opening cash balance in C6 coloums the closing cash balance (1650) was display on the C5 columns and next date (23-01-2015) closing cash balance was Show on the next date show opening cash balance
For Example
Dated Opening Cash Balance (C6 coloums) Closing Cash Balance (C5 coloums )
22-1-2015 12,500-00 1650-00
Next Day Opening Cash Balance (C6 coloums) Closing Cash Balance (C5 coloums )
23-1-2015 1650-00 This was display on less other Expenditures

if any difficulties i am send the file please see the attachmnets