{"id":2174,"canonical_url":"https://www.kudos365.com/today-in-history/events/352ce-dec-25--2174","name":"352 CE, December 25","year":352,"era":"CE","month":12,"day":25,"url":"https://www.kudos365.com/today-in-history/events/352ce-dec-25--2174","iso-date":"0352-12-25","precision":"year-month-day","description":"\u003cp\u003ePope Liberius celebrates the first official Christmas mass in Rome on December 25, 352. Earlier the same year, his predecessor, Pope Julius I, had officially established December 25 as the date of the celebration of the birth of Jesus Christ, but Pope Julius died on April 352 before he could celebrate the first official Christmas Mass in Rome.\u003cbr\u003e\u003c/p\u003e","additional_details":"\u003cp\u003eMany believe that the choice of December 25th was to align with the Roman festival of Natalis Invicti (Birth of the Unconquered Sun) and the winter solstice, allowing the Church to Christianize existing pagan observances.\u003c/p\u003e","photo":"https://k365fs.imgix.net/RBaVRwZRVuIOEJ1VCIog_Liberius,_papa_(-_366)%20-%20PD-R.jpg?auto=format,compress\u0026fit=clip\u0026max-w=1600","photo_width":899,"photo_height":640,"created_at":"2025-03-24T19:50:48-07:00","updated_at":"2025-12-26T15:49:06-08:00","breadcrumbs":{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"December History","item":"https://www.kudos365.com/today-in-history/december"},{"@type":"ListItem","position":2,"name":"December 25","item":"https://www.kudos365.com/today-in-history/december-25"}]},"schema":{"@context":"https://schema.org","@type":"Thing","@id":"https://www.kudos365.com/today-in-history/events/352ce-dec-25--2174#eventK365","name":"352 CE, December 25","headline":"Pope Liberius celebrates the first official Christmas mass in Rome on December 25, 352 - 352 CE","description":"Pope Liberius celebrates the first official Christmas mass in Rome on December 25, 352. Earlier the same year, his predecessor, Pope Julius I, had officially...","url":"https://www.kudos365.com/today-in-history/events/352ce-dec-25--2174","additionalType":"HistoricalEvent","inLanguage":"en","datePublished":"2025-03-24T19:50:48-07:00","dateModified":"2025-12-26T15:49:06-08:00","publisher":{"@id":"https://www.kudos365.com/#organizationK365"},"image":{"@type":"ImageObject","url":"https://k365fs.imgix.net/RBaVRwZRVuIOEJ1VCIog_Liberius,_papa_(-_366)%20-%20PD-R.jpg?auto=format,compress\u0026fit=clip\u0026max-w=1600","width":899,"height":640},"temporalCoverage":"0352-12-25","isPartOf":[{"@id":"https://www.kudos365.com/#websiteK365"},{"@type":"CollectionPage","@id":"https://www.kudos365.com/today-in-history/december","name":"What Happened in December History"},{"@type":"CollectionPage","@id":"https://www.kudos365.com/today-in-history/december-25#pageK365","name":"What Happened on December 25"}]}}