“ Any employee whose workday covers portions of two calendar days and who would, except for this section, ordinarily be excused from work scheduled for the hours of any calendar day on which a holiday falls, shall instead be excused from work on his entire workday which commences on any such calendar day. ”

“ The provisions of this order shall apply to officers and employees of the Post Office Department and the United States Postal Service (except that sections 3, 4, 5, and 6 shall not apply to the Postal Field Service) until changed by the Postal Service in accordance with the Postal Reorganization Act.
Sec. 8. ”