From Longman Dictionary of Contemporary Englishquarter dayˈquarter day noun [countable] technical British EnglishBPERIOD OF TIME a day which officially begins a three-month period of the year, and on which payments are made, for example at the stock exchange
Examples from the Corpus
quarter day• But as the same people said that at every quarter day for the past year nobody took much notice.From Longman Business Dictionaryquarter dayˈquarter day noun [countable] British EnglishFINANCEACCOUNTING a day that officially begins a three-month period of the year, and on which payments are madeRent is payable in advance on the usual quarter days. 