Town Taking Day
/ˈtaʊn ˌteɪkɪŋ ˌdeɪ/Now historical
noun
4 December 1688, the day on which Hull was secured for William III (William of Orange) as part of the Glorious Revolution; the anniversary of this, formerly celebrated in Hull as a holiday.
Origin
Late 18th century; earliest use found in George Hadley (d. 1798), army officer in the East India Company and philologist. From town-taking + day.