CFR > Title 24 - Housing and Urban Development > SUBTITLE A—Office of the Secretary, Department of Housing and Urban Development > PART 84—UNIFORM ADMINISTRATIVE REQUIREMENTS FOR GRANTS AND AGREEMENTS WITH INSTITUTIONS OF HIGHER EDUCATION, HOSPITALS, AND OTHER NON-PROFIT ORGANIZATIONS > SUBPART C—Post-Award Requirements (§84.20 to §84.62) > 84.28—Period of availability of funds.