Period of celebration (8)
I believe the answer is:
festival
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">period of celebration</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for festival that I've seen before include "Edinburgh's summer event" , "Fair" , "Traditionally time of celebration" , "Holy day" , "Day set aside for celebration" .)