Christian feast day: September 17 (Eastern Orthodox liturgics)
September 16 - Eastern Orthodox liturgical calendar - September 18
Christian feast day: September 17 (Eastern Orthodox liturgics)
Explore 2624 historical events from 0β9.
September 16 - Eastern Orthodox liturgical calendar - September 18
Christian feast day: September 17 (Eastern Orthodox liturgics)
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…
Constitution Day and Citizenship Day, observed on the previous Friday if it falls on a Saturday, the following Monday…
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 deat…
Heroes' Day (Angola)
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 w…
Marathwada Liberation Day (Maharashtra)
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,…
National Unity Day (Belarus) (since 2021)
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 c…
Operation Market Garden Anniversary is still remembered with parachuting and dedications on this day. (Netherlands)
Constantius is venerated as a member of the legendary Theban Legion. Similar to the cults of Chiaffredo at Crissolo, Bessus at Val Soana, Tegulus at Ivrea, Magnus at Castelmagno, a…
Christian feast day: Constantius (Theban Legion)
Edward Bouverie Pusey was an English Anglican cleric, for more than fifty years Regius Professor of Hebrew at the University of Oxford. He was one of the leading figures in the Oxf…
Christian feast day: Edward Bouverie Pusey (Episcopal Church)
Eustorgius I was bishop of Milan from 343 to about 349. He is honoured as a Saint in both the Catholic Church and the Eastern Orthodox Church. His feast day is on the September 18.
Christian feast day: Eustorgius I
Joseph of Cupertino, OFM Conv. was an Italian Conventual Franciscan friar who is honored as a Christian mystic and saint. According to traditional Franciscan accounts, he was "rema…
Christian feast day: Joseph of Cupertino
John Macías, OP, was a Spanish-born Dominican friar who evangelized in Peru in 1620. He was canonized in 1975 by Pope Paul VI. His image is located at the main altar of the Basilic…
Christian feast day: Juan Macias
Methodius of Olympus was an early Christian bishop, ecclesiastical author, and martyr. Today, he is honored as a saint and Church Father; the Catholic Church commemorates his feast…
Christian feast day: Methodius of Olympus
Saint Richardis, also known as Richgard, Richardis of Swabia and Richarde de Souabe in French, was empress of the Carolingian Empire as the wife of Charles the Fat. She was renowne…
Christian feast day: Richardis
Sep. 17 - Eastern Orthodox liturgical calendar - Sep. 19
Christian feast day: September 18 (Eastern Orthodox liturgics)
National Music Day in Azerbaijan is a holiday annually celebrated on 18 September on the birthday of the founder of the modern professional musical art of Azerbaijan, Uzeyir Hajibe…
Day of National Music (Azerbaijan)
The Ryukyuan languages , also Lewchewan or Luchuan, are the indigenous languages of the Ryukyu Islands, the southernmost part of the Japanese archipelago. Along with the Japanese l…
Island Language Day (Okinawa Prefecture, Japan)
The Fiestas Patrias of Chile consist of two days, with a third one added on some years:18 September, in commemoration of the proclamation of the First Governing Body of 1810, and m…
National Day or Dieciocho (Chile)
HIV.gov, formerly known as AIDS.gov, is an internet portal for all United States federal domestic HIV and AIDS resources and information. On World AIDS Day, December 1, 2006, the U…
National HIV/AIDS and Aging Awareness Day (United States)
Several nations observe or have observed a Navy Day to recognize their navy.
Navy Day (Croatia)
World Water Monitoring Day was an international day established in 2003 by America's Clean Water Foundation (ACWF) as a global educational outreach program. The program, subsequent…
World Water Monitoring Day
Alonso de Orozco Mena was a Spanish Roman Catholic priest from the Augustinian order. He was well known across Spain for his preaching abilities and for an austere and humble life.
Christian feast day: Alonso de Orozco Mena
Émilie de Rodat, born Marie Guillemette (Wilhelmina) Emilie de Rodat, also known as Emily de Rodat, was a nun, virgin, mystic, and the founder of the Sisters of the Holy Family of …
Christian feast day: Emilie de Rodat
Goeric of Metz, also known as Abbo I of Metz, Goericus of Metz, and Gury of Metz, was a bishop of Metz. He is venerated as a saint in the Eastern Orthodox and Roman Catholic Church…
Christian feast day: Goeric of Metz
The Feast of San Gennaro, also known as San Gennaro Festival, is a Neapolitan and Italian-American patronal festival dedicated to Saint Januarius, patron saint of Naples and Little…
Christian feast day: Januarius (Western Christianity) Feast of San Gennaro