of the birth or adoption of the child. (3) Parental leave The term parental leave means any period of leave from employment which is taken by a parent to provide care for a child. . (b) Pre-Calculation of parental leave credit Not later than January 1, 2020, the Secretary of the Treasury or the Secretary's delegate (referred to in this subsection and subsection (c) as the Secretary ) shall establish a program, to be made available online and through such other methods as is determined appropriate by the Secretary, to allow individuals who intend to take parental leave to— (1) determine their average weekly wage rate (as defined in subsection (b)(2) of section 36C of the Internal Revenue Code of 1986)