quarter day

Noun

 * 1) Each of the four days customarily regarded as starting a new quarter year, formerly established as a time for rents and other payments to be due, tenancies to begin and end, and various meetings and assemblies to be held.

Usage notes

 * in England and Ireland: Lady Day (25 March), Midsummer Day (24 June), Michaelmas (29 September), Christmas Day (25 December).
 * in Scotland: Candlemas (2 February), Whitsun (15 May), Lammas (1 August), Martinmas (11 November).
 * Elsewhere, where the term "quarter day" is not used, January 1st, April 1st, July 1st and October 1st each mark the start of a quarter, especially a fiscal quarter.

Translations

 * Korean: 사시가절(四時佳節)
 * Polish: dzień kwartalny, suchy dzień
 * Russian: квартальный день