Base Offering Circular - Multifamily 482090 61 Book-Entry Depository Account ...................................... An Eligible Account that is a limited-purpose account maintained by the Trustee at the Book-Entry Depository. Book-Entry Security................... Any Security the beneficial ownership of which is reflected in book-entry form rather than certificated form through the facilities of the Book-Entry Depository. Business Day.............................. A day other than (a) a Saturday or Sunday, (b) a day on which the banking institutions in the State of New York are authorized or obligated by law or executive order to remain closed, or (c) a federal legal public holiday as defined in 5 U.S.C. § 6103. Calculated Certificate Factor...... With respect to any Ginnie Mae Multifamily Certificate for which a Certificate Factor (a) is not available on the Certificate Factor Date, or (b) if available, cannot be verified  by the Trustee as correct and has not been replaced by a Corrected Certificate Factor, by 12:00 noon on the second Business Day preceding a Distribution Date, a factor calculated by the Trustee for such Distribution Date by assuming receipt of all scheduled principal and interest on such Ginnie Mae Multifamily Certificate. Call Class ................................... Any Class of Call Class Securities. Call Class Security ..................... Any Ginnie Mae Guaranteed Callable Pass-Through Security denominated as a Call Class Security. Callable Class............................. Classes that are designed to receive payments based on distributions on Underlying Callable Securities. Callable Class Security............... Any Ginnie Mae Guaranteed Callable Pass-Through Security denominated as a Callable Class Security and guaranteed by Ginnie Mae under the Ginnie Mae Multiclass Securities Program. Callable Series............................ A Series of Ginnie Mae Guaranteed Callable Pass-Through Securities issued pursuant to a Trust Agreement and having the numerical or other designation specified in the related Trust Agreement. Callable Trust............................. A trust created pursuant to a Trust Agreement for the purpose of issuing Call and Callable Class Securities. Certificate Factor........................ With respect to each Trust MBS or Underlying Callable Security and each Certificate Factor Date, the factor for