Debentures shall bear interest from the date of issue, payable semiannually on the first day of January and the first day of July of each year at the rate in effect as of the date the commitment was issued or as of the date the loan was endorsed for insurance, whichever rate is higher. The applicable rates of interest will be published twice each year as a notice in the Federal Register. [47 FR 26125, June 17, 1982]