Holidays and observances
Holidays and observances on September 17
17 holidays and special days are celebrated on September 17 around the world.
- 17observances
- 71events
Holidays and observances
Australian Citizenship DayAustralian Citizenship Day is celebrated each year on 17 September. Managed by the Australian Department of Home Affairs, Australian Citizenship Day is an opportunity for all Australian citizens, whether by birth or by choice, to reflect on the meaning and imp
Christian feast day:
Albert of VercelliAlbert of Jerusalem, OSC, also Albertus Hierosolymitanus, Albertus Vercelensis, Saint Albert, Albert of Vercelli or Alberto Avogadro, was a canon lawyer and saint. He was Bishop of Bobbio and Bishop of Vercelli, and served as mediator and diplomat under Pope C
Christian feast day:
Ariadne of PhrygiaSaint Ariadne of Phrygia is a 2nd-century Christian saint and martyr.
Christian feast day:
Blessed Cecilia EusepiBeatification is an act by which the Catholic Church formally recognizes that a deceased member of the faithful is believed to have entered Heaven and is capable of interceding on behalf of individuals who pray in their name, permitting a restricted, local for
Christian feast day:
Stanislaus PapczyńskiStanislaus Papczyński, MIC, born Jan Papczyński and in religion Stanislaus of Jesus and Mary, was a Polish Catholic priest who founded the Marians of the Immaculate Conception, the first Polish religious order for men. He is also widely remembered as a prolifi
Christian feast day:
Hildegard of BingenHildegard of Bingen, also known as the "Sibyl of the Rhine", was a German Benedictine abbess and polymath, active during the High Middle Ages as a writer, composer, philosopher, mystic, visionary, and as a medical writer and practitioner of the Catholic Church
Christian feast day:
LambertLambert of Maastricht, commonly referred to as Saint Lambert, was the bishop of Maastricht-Liège (Tongeren) from about 670 until his death. Lambert denounced Pepin's liaison with his mistress or bigamous wife Alpaida, the mother of Charles Martel. The bishop w
Christian feast day:
Robert BellarmineRobert Bellarmine was an Italian Jesuit and a cardinal of the Catholic Church. He was canonized a saint in 1930 and named Doctor of the Church, one of only 27 at the time. He was one of the most important figures in the Counter-Reformation.
Christian feast day:
Satyrus of MilanSatyrus of Milan was an Italian Catholic administrator born in Augusta Treverorum, who was the brother of Ambrose of Milan and Marcellina.- Christian feast day: Socrates and StephenSocrates and Stephen are a pair of Christian martyrs. Their feast day is 17 September.
Christian feast day:
Zygmunt Szczęsny FelińskiZygmunt Szczęsny Feliński was a professor of the Saint Petersburg Roman Catholic Theological Academy, Archbishop of Warsaw in 1862-1883, and founder of the Franciscan Sisters of the Family of Mary. He was canonised on 11 October 2009 by Pope Benedict XVI.
Christian feast day:
September 17 (Eastern Orthodox liturgics)September 16 - Eastern Orthodox liturgical calendar - September 18
Constitution Day and Citizenship Day, observed on the previous Friday if it falls on a Saturday, the following Monday if on a Sunday; and the beginning of the Constitution Week (United States)Constitution Day and Citizenship Day is an American federal observance that recognizes the adoption of the United States Constitution and those who have become U.S. citizens. It is normally observed on September 17, the day in 1787 that delegates to the Consti- Heroes' Day (Angola)Heroes' Day or National Heroes' Day may refer to a number of commemorations of national heroes in different countries and territories. It is often held on the birthday, or the death of a national hero or heroine, or the anniversary of their great deeds that ma
Marathwada Liberation Day (Maharashtra)Marathwada Liberation Day, also known as Marathwada Mukti Sangram Din, is celebrated in Maharashtra on 17 September annually. It marks the anniversary of Marathwada's integration with India when the Indian military, liberated State of Hyderabad, and defeated t- National Unity Day (Belarus) (since 2021)The National Unity Day is a state holiday in Belarus celebrated on September 17 and marks the unification of the Western Belarus and Eastern Belarus which happened on September 17, 1939, the day of the Soviet invasion of Poland during World War II. It was esta
Operation Market Garden Anniversary is still remembered with parachuting and dedications on this day. (Netherlands)Operation Market Garden was an Allied military operation during the Second World War, fought in the German-occupied Netherlands from 17 to 25 September 1944. Its objective was to create a salient spanning 62 miles (100 km) into German territory with a bridgehe
Frequently asked questions
What is celebrated on September 17?
17 observances are celebrated on September 17 around the world: Australian Citizenship Day, Christian feast day: Albert of Vercelli, Christian feast day: Ariadne of Phrygia, Christian feast day: Blessed Cecilia Eusepi, Christian feast day: Stanislaus Papczyński, Christian feast day: Hildegard of Bingen. 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 September 17?
71 documented historical events happened on September 17, from antiquity to the present day. The best known is this: Byzantine–Seljuk wars: At the Battle of Myriokephalon in Phrygia, the Seljuq Turks prevented Byzantine forces from taking the interior of Anatolia. On the same day, in another year: Following Louis I's death without a male heir, his daughter Mary was crowned with the title of "King" of Hungary. 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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