Holidays and observances
Holidays and observances on December 15
13 holidays and special days are celebrated on December 15 around the world.
- 13observances
- 53events
Holidays and observances
- Bill of Rights Day (United States) 2nd Amendment Day (South Carolina)2nd Amendment Day is a public awareness day observed in Oklahoma, Pennsylvania, and South Carolina in the United States. Its purpose is to promote the view that the Second Amendment to the United States Constitution grants absolute rights to for adult-age Amer
Christian feast day:
Drina MartyrsThe Blessed Martyrs of Drina are the professed Sisters of the Congregation of the Daughters of Divine Charity, who died during World War II. Four were killed when they jumped out of a window in Goražde on 15 December 1941, reportedly to avoid being raped by Ch- Christian feast day: Drostan (Aberdeen Breviary)Saint Drostan, also known as Drustan, was the founder and abbot of the monastery of Old Deer in Aberdeenshire. His relics were later translated to the church at New Aberdour and his holy well lies nearby.
Christian feast day:
John Horden and Robert McDonald (Episcopal Church (USA))John Horden was the first Anglican Bishop of Moosonee, Canada, who for more than forty years led services in Cree, Inuit and other languages of his parishioners.
Christian feast day:
Maria Crocifissa di RosaMaria Crocifissa Di Rosa - born as Paola Francesca Di Rosa - was an Italian Roman Catholic professed religious and the founder of the Ancelle della carità (1839). Di Rosa worked first at her father's spinning mill where she - with his encouragement - tended to
Christian feast day:
MesminMesmin is a French saint associated with the Bishopric of Orléans. He was the second abbot of Micy Abbey, founded by his uncle, Euspicius.- Christian feast day: Valerian of AbbenzaValerian (377–457) was bishop of Abbenza in North Africa, probably Dioecesis Zabensis.(it) He was martyred in 457 when he refused to surrender the sacred vessels of his church to the Vandals led by Arian king Geiseric, who outlawed him, notwithstanding his gre
Christian feast day:
Virginia Centurione BracelliVirginia Centurione Bracelli was an Italian noblewoman from Genoa. Her father was the Doge of Genoa, and she had a short marriage due to being widowed in 1607. She is venerated as a saint in the Catholic Church.
Christian feast day:
December 15 (Eastern Orthodox liturgics)December 14 – Eastern Orthodox liturgical calendar – December 16
Homecoming Day (Alderney)The military occupation of the Channel Islands by Nazi Germany lasted for most of the Second World War, from 30 June 1940 until liberation on 9 May 1945. The Bailiwick of Jersey and Bailiwick of Guernsey are British Crown dependencies in the English Channel, n- Kingdom Day (Netherlands), moves to December 16 if the 15th is on a SundayKoninkrijksdag is the commemoration of the signing of the Charter for the Kingdom of the Netherlands on 15 December 1954 in Aruba, Curaçao, the Netherlands, and Sint Maarten. When 15 December falls on a Sunday, the commemoration takes place on Monday 16 Decemb
Zamenhof Day (International Esperanto Community)Zamenhof Day, also called Esperanto Book Day, is celebrated on 15 December, the birthday of Esperanto creator L. L. Zamenhof. It is the most widely celebrated day in Esperanto culture. On this day, Esperantists hold information sessions and cultural gatherings- World Turkic Language Family Day (UNESCO)World Turkic Language Family Day is an international day observed annually on 15 December. It was proclaimed in 2025 by the General Conference of the United Nations Educational, Scientific and Cultural Organization (UNESCO) to promote linguistic and cultural d
Frequently asked questions
What is celebrated on December 15?
13 observances are celebrated on December 15 around the world: Bill of Rights Day (United States) 2nd Amendment Day (South Carolina), Christian feast day: Drina Martyrs, Christian feast day: Drostan (Aberdeen Breviary), Christian feast day: John Horden and Robert McDonald (Episcopal Church (USA)), Christian feast day: Maria Crocifissa di Rosa, Christian feast day: Mesmin. The list gathers national holidays, international days and religious or civil observances falling on this date in different countries, as recorded on Wikipedia. Some are fixed and recur on the same day every year; others depend on the local calendar. Each links to the article explaining its origin and meaning.
What happened on December 15?
53 documented historical events happened on December 15, from antiquity to the present day. The best known is this: Byzantines led by Belisarius defeated the Vandal King Gelimer at the Battle of Tricamarum, completing the "Reconquest of North Africa" under Byzantine Emperor Justinian I. On the same day, in another year: Sergius was elected pope, ending the last disputed period of sede vacante during the Byzantine Papacy. On Almanaccolo every event is listed in chronological order, grouped by century, and links to the Wikipedia article it comes from, so you can always read further or check the source. Alongside the events you find who was born and who died on this date, and which observances are celebrated around the world.
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