Revenue Code of 1986 shall have the same meaning as when used in such chapter. (5) References to Emergency Family and Medical Leave Expansion Act Any reference in this section to the Emergency Family and Medical Leave Expansion Act shall be treated as including a reference to the amendments made by such Act. (e) Application of section Only days occurring during the period beginning on a date selected by the Secretary of the Treasury (or the Secretary’s delegate) which is during the 15-day period beginning on the date of the enactment of this Act, and ending on December 31, 2020, may be taken into account under subsection (c)(1)(A). (f) Application of credit in certain possessions (1) Payments to possessions with mirror code tax systems The Secretary of the Treasury (or the Secretary’s delegate) shall pay to each possession of the United States which has a mirror code tax system amounts equal to the loss (if any) to that possession by reason of the application of the provisions of this section. Such amounts shall be determined by the Secretary of the Treasury (or the Secretary’s delegate) based on information provided by the government of the respective possession. (2) Payments to other possessions The Secretary of the Treasury (or the Secretary’s delegate) shall pay to each possession of the United States which does not have a mirror code tax system amounts estimated by the Secretary of the Treasury (or the Secretary’s delegate) as being equal to the aggregate benefits (if any) that would have been provided to residents of such possession by reason of the provisions of this section if a mirror code tax system had been in effect in such possession. The preceding sentence shall not apply unless the respective possession has a plan, which has been approved by the Secretary of the Treasury (or the Secretary’s delegate), under which such possession will promptly distribute such payments to its residents. (3) Mirror code tax system For purposes of this section, the term mirror code tax system means, with respect to