Yes, generally a credit union shall make funds deposited by cash available for withdrawal by the next day—or not later than the business day after the business day on which the cash is deposited, if the deposit is made in person to an employee of the credit union.
A credit union shall make funds deposited in an account by cash available for withdrawal not later than the second business day after the business day on which the cash is deposited, if the deposit is not made in person to an employee of the credit union.

A business day is a calendar day other than a Saturday, Sunday, or a federal holiday. 
A day is a business day during which an office of a credit union is open to the public for substantially all of its credit union functions.