Battle of Tendra Day(Russia)
A day commemorating the Russian naval victory at the Battle of Tendra in 1790 and honoring the bravery of Admiral Ushakov's fleet.
The Battle of Tendra was a significant naval engagement fought on September 11, 1790, between the Russian Imperial Navy and the Ottoman fleet during the Russo-Turkish War. Led by Admiral Fyodor Ushakov, the Russian fleet won a decisive victory, capturing or destroying most of the enemy ships. This triumph enhanced Russian naval reputation and secured control of the Black Sea. Celebrated annually as Battle of Tendra Day in Russia, it honors the courage and strategic skill of the sailors and officers involved. Ceremonies include wreath-laying at maritime monuments, reenactments, and public lectures by naval historians. The day also highlights Russia's naval traditions and commemorates the legacy of Admiral Ushakov's tactics.
Battle of Tendra Day
Christianfeast days:
BlessedFrancesco Bonifacio, Deiniol, Felix, Regula, and Exuperantius, Harry Burleigh(Episcopal Church), John Gabriel Perboyre(one ofMartyr Saints of China), Leudinus (Bobo), Our Lady of Coromoto, Paphnutius of Thebes(Roman Catholic Church), Patiens of Lyon, Protus and Hyacinth, Sperandia, Theodora of Alexandria, September 11 (Eastern Orthodox liturgics)
A collective observance of multiple Christian saints and blessed figures across Catholic, Orthodox, and Anglican traditions on September 11th.
On September 11th, churches around the world hold feast days in honor of various saints and blessed figures revered in Catholic, Orthodox, and Anglican traditions. Roman Catholics remember Blessed Francesco Bonifacio, Deiniol of Bangor, Felix, Regula and Exuperantius, Paphnutius of Thebes, Patiens of Lyon, Protus and Hyacinth, and Sperandia, among others. The Eastern Orthodox liturgical calendar includes Theodora of Alexandria and several other martyrs. The Episcopal Church commemorates composer Harry Burleigh, while the martyrdom of John Gabriel Perboyre in China is also observed. Services typically feature special masses, hymns, processions, and readings that reflect the lives and legacies of these figures. This convergence of observances highlights the rich tapestry of Christian hagiography and the enduring inspiration drawn from these holy men and women.
feast days
Blessed
Francesco Bonifacio
Deiniol
Felix, Regula, and Exuperantius
Harry Burleigh
Episcopal Church
John Gabriel Perboyre
Martyr Saints of China
Leudinus (Bobo)
Our Lady of Coromoto
Paphnutius of Thebes
Roman Catholic Church
Patiens of Lyon
Protus and Hyacinth
Sperandia
Theodora of Alexandria
September 11 (Eastern Orthodox liturgics)
Death Anniversary of Quaid-e-Azam Muhammad Ali Jinnah(Pakistan)
Honors the death anniversary of Muhammad Ali Jinnah, the founding father of Pakistan, observed annually on September 11th.
Muhammad Ali Jinnah, known as Quaid-e-Azam ('Great Leader'), passed away on September 11, 1948, just over a year after the creation of Pakistan. Each year, Pakistan and Pakistani communities worldwide pay tribute to his vision, leadership, and role in the country's independence movement. Ceremonies and official programs are held at his mausoleum in Karachi, where political leaders, military officials, and citizens lay wreaths. Speeches, discussions, and exhibitions focus on Jinnah's contributions to Pakistan's founding principles of democracy and religious freedom. Educational institutions and media outlets broadcast documentaries and debates about his life and legacy. The day serves as a reminder of Jinnah's enduring influence on Pakistan's national identity and governance.
Death Anniversary of Quaid-e-Azam Muhammad Ali Jinnah
Pakistan
Emergency Number Day(United States)
A day to promote awareness of the 9-1-1 emergency number and encourage proper use in life-threatening situations.
Emergency Number Day, observed annually on September 11th in the United States, commemorates the adoption of 9-1-1 as the universal emergency telephone number. First authorized by AT&T in 1968, 9-1-1 revolutionized public safety by enabling citizens to quickly connect with police, fire, and medical responders. Public safety organizations, schools, and community groups host demonstrations on how to place emergency calls, maintain calm, and provide vital information. The day also highlights the role of dispatchers and emergency operators who handle millions of calls each year. Educational campaigns emphasize when to dial 9-1-1 versus non-emergency lines to optimize response resources. By raising awareness, Emergency Number Day aims to save lives and ensure that help arrives swiftly when every second counts.
Emergency Number Day
United States
Enkutatashfalls on this day if it is not a leap year. Celebrated on the first day ofMäskäräm. (Ethiopia,Eritrea,Rastafari)
Celebrates Enkutatash, the Ethiopian and Eritrean New Year, observed on September 11th in most years.
Enkutatash marks the first day of Mäskäräm, the first month in the Ethiopian and Eritrean calendars, and typically falls on September 11th (or September 12th in leap years). The name Enkutatash means 'gift of jewels' and commemorates the return of the Queen of Sheba from her visit to King Solomon. Today, families gather to exchange bouquets of bright yellow meskel flowers and to share traditional meals like injera and doro wat. In Ethiopia, it is a national holiday featuring church services, community feasts, and cultural performances. Eritrean celebrations similarly include music, dancing, and family reunions. Enkutatash also resonates in the Rastafarian faith, which follows a variant of the Ethiopian calendar. The day symbolizes renewal, hope, and the rich cultural heritage of the Horn of Africa.
Enkutatash
Mäskäräm
Ethiopia
Eritrea
Rastafari
National Day(Catalonia)
La Diada commemorates the fall of Barcelona during the War of the Spanish Succession, observed in Catalonia on September 11th.
Catalonia's National Day, known as La Diada, honors the collective remembrance of the 1714 fall of Barcelona to Bourbon forces in the War of the Spanish Succession. Established as a public holiday in 1980, it serves as a symbol of Catalan identity, language, and political aspirations. Each year, thousands gather in Barcelona's streets and on Montjuïc hill to lay floral tributes at monuments dedicated to Catalan defenders. The day features cultural events, traditional Sardana dances, human tower demonstrations (castells), and speeches by civic leaders. Political rallies also draw attention to contemporary debates on autonomy and independence. La Diada blends solemn commemoration with vibrant cultural expression, reflecting Catalonia's historical resilience and communal spirit.
National Day
Catalonia
Nayrouz(Coptic Orthodox Church), September 12 on leap years.
Marks Nayrouz, the Coptic New Year feast, celebrated by the Coptic Orthodox community on September 11th (or September 12th in leap years).
Nayrouz is the Coptic Orthodox Church's celebration of the new year, named after the ancient Egyptian word for 'new beginnings.' It ushers in Thout, the first month of the Coptic calendar, with liturgical services that include the reading of resurrectional hymns and special prayers. Coptic Christians dress in festive attire, attend church, and share communal meals featuring dishes like fatta and holiday breads. In Egypt and diaspora communities, the day also honors martyrs from the early church through readings from the Synaxarium. The observance blends religious reverence with cultural traditions handed down through centuries. When the leap year adjustment shifts the date to September 12th, believers follow the same rites one day later.
Nayrouz
Coptic Orthodox Church
September 11 attacks-related observances (United States):
National Day of Service and Remembrance, Patriot Day
Honors the victims of the September 11 attacks through Patriot Day and the National Day of Service and Remembrance.
Patriot Day was proclaimed in 2002 to remember the nearly 3,000 people who lost their lives in the 2001 terrorist attacks on the World Trade Center, the Pentagon, and Flight 93. Concurrently, Congress designated September 11th as the National Day of Service and Remembrance to encourage volunteerism in honor of those affected. Each year, citizens participate in memorial ceremonies at ground zero, the Pentagon Memorial, and the Flight 93 National Memorial, while others engage in community service projects nationwide. U.S. flags are flown at half-staff, and a moment of silence is observed at the time of each attack. Schools, nonprofits, and faith groups organize blood drives, food banks, and neighborhood clean-ups to embody the spirit of unity and compassion. The day underscores resilience, national solidarity, and the enduring commitment to never forget the events of 9/11.
September 11 attacks
United States
National Day of Service and Remembrance
Patriot Day
Teachers' Day(Argentina)
Recognizes Teachers' Day in Argentina, honoring educators on the anniversary of Domingo Sarmiento's death.
Teachers' Day in Argentina falls on September 11th, commemorating the death of Domingo Faustino Sarmiento, the country's second president and a champion of public education. Sarmiento's reforms in the 19th century expanded schools, trained teachers, and elevated the importance of literacy and civic education. On this day, schools across Argentina hold special assemblies where students present performances, speeches, and gifts to their teachers. Education ministries and local governments also organize lectures and award ceremonies highlighting innovative teaching practices. The occasion serves to celebrate the vital role educators play in society and to inspire future generations of learners. Teachers receive public tributes and media stories that reflect on Sarmiento's enduring educational legacy.
Teachers' Day
Argentina
BlessedFrancesco Bonifacio
Honors Blessed Francesco Bonifacio, a 20th-century missionary and martyr celebrated on September 11th.
Blessed Francesco Bonifacio (1912-1946) was an Italian Salesian priest who served as a missionary in Papua New Guinea. He was martyred during colonial conflicts and is revered for his dedication to education, evangelization, and compassionate service to indigenous communities. Pope John Paul II beatified him in 1995, recognizing his heroic virtues and sacrifice. On September 11th, the Roman Catholic Church and missionary societies remember his life through special masses, prayers, and reflections on missionary work. Pilgrimages to his tomb, virtual lectures, and exhibit displays share his story with the faithful. The feast day highlights themes of faith under persecution, intercultural dialogue, and the enduring impact of missionary service.
Blessed
Francesco Bonifacio
Deiniol
Feast day of St. Deiniol, a 6th-century Welsh bishop and founder of Bangor Cathedral.
St. Deiniol was a revered 6th-century bishop known for establishing a monastic community at Bangor in present-day Wales. He is credited with founding Bangor Cathedral and fostering the spread of Christianity across North Wales. His life is marked by devotion to faith and scholarship, earning him veneration as a saint. This day celebrates his legacy of spiritual leadership and the monastic tradition he inspired. Many communities remember his contributions through church services and cultural events in his honor.
Deiniol
Felix, Regula, and Exuperantius
Commemorates the sibling martyrs Felix and Regula, and their companion Exuperantius, patron saints of Zurich.
Felix and Regula were brother and sister, and Exuperantius their servant, who became early Christian martyrs in 3rd-century Zurich. They refused to renounce their faith and were beheaded on the banks of the Limmat River. Their sacrifice became a symbol of steadfast devotion and courage under persecution. They are honored as the patron saints of Zurich, where their relics were once kept at the Grossmünster. Today, their memory is preserved with processions, church services, and artistic tributes in Switzerland.
Felix, Regula, and Exuperantius