playday

From play +‎ day.

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playday (plural playdays)

1. A day devoted to play or fun.
   • July 28 1728, Jonathan Swift, My Lady's Lamentation and Complaint against the Dean

     To ease a poor lady,
     And beg her a playday.
     So may you be seen
     No more in the spleen!

• “playday”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.