Christianfeast day:

Arialdo, Crescens, one of theSeventy disciples, Cyril of Alexandria(Coptic Church,Roman Catholic Church,Anglican CommunionandLutheran Church), Hemma of Gurk, Ladislaus I of Hungary, Our Lady of Perpetual Help, Sampson the Hospitable, Zoilus, June 27 (Eastern Orthodox liturgics)

An annual liturgical feast on June 27 honoring saints recognized by Eastern Orthodox, Roman Catholic, Coptic, Anglican, and Lutheran traditions.
On June 27, various Christian traditions celebrate a group of saints and martyrs whose devotion shaped the church. The feast honors Latin saints like Arialdo, an archdeacon martyred for his faith, and Hemma of Gurk, revered for her charitable works. The Coptic and Eastern Orthodox churches remember Crescens and Cyril of Alexandria for their theological contributions. Devotees also venerate Ladislaus I of Hungary for his piety and Our Lady of Perpetual Help for her enduring legacy. The day's services include special liturgies, prayers, and reflections that highlight the virtues of faith, compassion, and leadership embodied by these figures.
feast day Arialdo Crescens Seventy disciples Cyril of Alexandria Coptic Church Roman Catholic Church Anglican Communion Lutheran Church Hemma of Gurk Ladislaus I of Hungary Our Lady of Perpetual Help Sampson the Hospitable Zoilus June 27 (Eastern Orthodox liturgics)

Canadian Multiculturalism Day(Canada)

A national observance in Canada celebrating the country's cultural diversity and promoting inclusivity across its communities.
Established in 2002 by the Government of Canada, Canadian Multiculturalism Day is observed annually on June 27 to honor the cultural mosaic that defines the nation. It commemorates the passing of the Multiculturalism Act in 1988 and celebrates the contributions of immigrants and indigenous peoples. Events across the country include cultural performances, community gatherings, and educational programs that showcase traditions, cuisines, and arts from various backgrounds. The day fosters understanding, mutual respect, and dialogue among Canada's diverse populations. Citizens are encouraged to participate in local festivals and share stories that highlight the benefits of a multicultural society.
Canadian Multiculturalism Day

Commemoration Day for the Victims of the Communist Regime(Czech Republic)

A solemn national day in the Czech Republic honoring those persecuted and killed under the country's former communist regime.
Observed every June 27, this day remembers the victims of the communist dictatorship in Czechoslovakia from 1948 to 1989. It was established to pay tribute to individuals who suffered unjust imprisonment, forced labor, exile, or execution under the regime. Ceremonies involve laying wreaths at memorials, moments of silence in public spaces, and educational events that recount personal stories of hardship and resistance. The commemoration encourages reflection on the value of democracy, human rights, and historical memory. By honoring the courage of survivors and the memory of those lost, Czechs reaffirm their commitment to a free and open society.
Commemoration Day for the Victims of the Communist Regime Czech Republic

Day of Turkmen Workers of Culture and Art and poetry of Magtymguly Pyragy(Turkmenistan)

A national celebration in Turkmenistan honoring cultural workers and celebrating the legacy of poet Magtymguly Pyragy.
Every June 27, Turkmenistan pays tribute to artists, writers, musicians, and cultural professionals who enrich the nation's heritage. The holiday also commemorates the influential 18th-century poet Magtymguly Pyragy, whose verse remains a cornerstone of Turkmen literature. Official festivities include public performances, poetry readings, art exhibitions, and awards for outstanding contributions in culture and the arts. Schools and cultural centers host workshops inspired by Pyragy's themes of unity, patriotism, and moral integrity. The day underscores the vital role of creativity in nation-building and fosters pride in Turkmen identity and literary tradition.
Day of Turkmen Workers of Culture and Art and poetry of Magtymguly Pyragy Turkmenistan

Helen Keller Day(United States)

An observance honoring the life and achievements of Helen Keller, a pioneering advocate for people with disabilities.
Observed annually on June 27 in the United States, Helen Keller Day commemorates the birthday of the writer, lecturer, and activist who overcame deafness and blindness to inspire millions. Established by presidential proclamation, it highlights Keller's groundbreaking work in education, social justice, and disability rights. Schools and organizations host events that raise awareness about accessibility, support services, and inclusion for people with disabilities. Lectures, readings of Keller's writings, and fundraising activities for local disability charities are common observances. The day celebrates her enduring legacy of courage, perseverance, and advocacy for equality.
Helen Keller Day

Independence Day, celebrates the independence ofDjiboutifrom France in 1977.

Djibouti's National Independence Day, marking the country's liberation from French colonial rule in 1977.
On June 27 each year, Djibouti commemorates its independence from France, achieved in 1977 after years of struggle. The day features official ceremonies, military parades, and cultural performances showcasing the nation's diverse ethnic traditions. Government leaders deliver speeches emphasizing unity, development, and national pride. Citizens participate in street festivals, sporting events, and family gatherings to honor their heritage. Fireworks displays and traditional music round out the celebrations. Independence Day reinforces Djibouti's identity as a sovereign nation at the crossroads of Africa and the Middle East.
Independence Day Djibouti

Mixed Race Day(Brazil)

A celebration in Brazil recognizing the cultural contributions and identities of mixed-race individuals.
Mixed Race Day (Dia do Mestiço) is observed annually on June 27 in Brazil to honor the nation's diverse racial heritage and mixed-ancestry communities. First celebrated in the state of Pará, it gained national recognition as a way to promote racial equality and social inclusion. Festivities include cultural performances, art exhibits, and discussions on the history and current challenges of mixed-race Brazilians. The day encourages dialogue about identity, combating discrimination, and celebrating the unique blend of Indigenous, African, European, and other influences in Brazilian culture. Schools and community groups host educational workshops that highlight prominent figures of mixed heritage. Through recognition and celebration, Mixed Race Day aims to foster mutual respect and national unity.
Mixed Race Day Brazil

National PTSD Awareness Day(United States)

An American observance raising awareness about post-traumatic stress disorder and its impact on veterans and civilians.
National PTSD Awareness Day, observed on June 27, focuses attention on post-traumatic stress disorder and the challenges faced by those affected. Established to honor the service of veterans, first responders, and trauma survivors, the day promotes education on symptoms, treatment options, and support resources. Mental health organizations and government agencies organize seminars, webinars, and public campaigns to reduce stigma and encourage early intervention. Social media initiatives allow individuals to share stories of resilience and recovery. Hospitals and clinics may offer free screenings, counseling sessions, and informational materials. By advancing understanding and compassion, the observance seeks to improve outcomes and quality of life for people living with PTSD.
National PTSD Awareness Day

Seven Sleepers' DayorSiebenschläfertag(Germany)

A traditional German observance marking a weather lore prediction bound to the legend of the Seven Sleepers.
In Germany, Seven Sleepers' Day, celebrated on June 27, links folklore to meteorology through the legend of the Seven Sleepers of Ephesus. According to tradition, weather conditions on this day predict the pattern for the next seven weeks. Farmers and gardeners have historically watched the skies, believing that a sunny Seven Sleepers' Day forecasts good weather ahead. The name also references the Christian legend of seven youths who slept in a cave for centuries. While its scientific basis is debated, the day remains a charming cultural custom. Local communities may reference the lore with festivals, weather-related sayings, and family gatherings.
Seven Sleepers' Day

Unity Day (Tajikistan)

A national holiday in Tajikistan celebrating the unity and independence of the nation.
Observed on June 27, Unity Day commemorates Tajikistan's independence referendum of 1991 and the cohesion of its diverse population. The holiday emphasizes national solidarity, cultural heritage, and the achievements of statehood since the Soviet era. Government officials host official ceremonies, parades, and speeches highlighting progress in economic development and social harmony. Folk music, dance performances, and exhibitions of traditional crafts bring together communities across the country. Schools organize educational events about Tajik history and the importance of unity in nation-building. Unity Day reaffirms the country's commitment to peace, cooperation, and shared identity.
Unity Day (Tajikistan)

Arialdo

Feast day of Saint Arialdo, an 11th-century bishop of Milan noted for his role in church reform and martyrdom.
Saint Arialdo served as Bishop of Milan and led efforts against simony in the 11th century. He was martyred by opponents in 1066 and canonized in 1131. His feast day on June 27 honors his courage and commitment to ecclesiastical purity. Pilgrims visit Milan Cathedral to venerate his relics and seek his intercession. Communities celebrate with special Masses and reflections on his legacy.
Arialdo

Crescens, one of theSeventy disciples

Commemorates St. Crescens, one of the Seventy Apostles sent out by Jesus and honored as an early missionary.
According to Christian tradition, Crescens was among the Seventy Disciples appointed by Jesus in the Gospel of Luke. He is believed to have preached the Gospel in regions of Italy and possibly Gaul. His feast on June 27 celebrates his missionary zeal and foundational role in the early Church. Liturgies focus on his example of faith and evangelistic spirit. Believers invoke him for courage in spreading the Christian message.
Crescens Seventy disciples