If the loan is scheduled to close and fund on the 25th, there will be 25 days of per diem interest added to your loan payoff. (valoancaptain.com)
Note that the prepaid expenses may include per diem interest through the end of the month for the new loan, hazard / flood insurance premiums, mortgage insurance premiums and property tax deposits needed to establish the escrow account. (kentuckyfhaloan.wordpress.com)
One is per diem interest which means that interest is to be paid from the day of closing to the first day of the following month. (refinanceguide.org)