__ Day, Date Celebrates the Restoration of 1660

This page is the CodyCross answer for the clue below from TV Station, Group 620, Puzzle 4 (Guest Appearances).

Question is: __ Day, Date Celebrates the Restoration of 1660

and the answer is: OAKAPPLE

Word Meaning:

OAK APPLE — A spherical type of oak gall, produced by an oak gall wasp (tribe Cynipini).

Definitions from Wiktionary.