Home›Browse›proleptic calendar🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsРусскийالعربية한국어中文日本語EntityQ7249564· pop 5· linked from 2 articlesproleptic calendarSign in to savecalendar that is applied to dates before its introductionWikidata factsSubclass ofcalendar systemvia Wikidata · CC0Available in 5 languagesDeutschРусскийCzechRusynvia Wikidata sitelinks · CC0