G/Ls need to be reconciled for every day on which processing is run. 

For most credit union accounting teams, even if the CU's teller line happens to be open on Saturday, Saturday G/L recons are usually handled on Mondays.  With 7-day processing, the same process will apply to Sundays as well.  When balancing GL activity on Monday morning, the accounting department may need to review balance information for weekend days or additional reports created on the weekend if any research is needed.

For example, with 7-day processing, any end-of-day processes such as Automated Funds Transfers (AFT) and accruals will create additional reports for both Saturday and Sunday.