Christianfeast day:

Abdecalas, Anastasius Sinaita, Anselm of Canterbury, Beuno, Conrad of Parzham, Holy Infant of Good Health, Shemon Bar Sabbae, Wolbodo, April 21 (Eastern Orthodox liturgics)

In the Eastern Orthodox liturgical calendar, April 21 honors a group of saints and martyrs whose faith and devotion are remembered through special services.
On this day, the Eastern Orthodox Church commemorates several notable figures from early Christianity, including Abdecalas and Anastasius Sinaita. Worshippers participate in liturgies featuring hymns, readings, and prayers that reflect the lives and sacrifices of these saints. The feast brings communities together in reflection on the virtues of courage, charity, and steadfast faith that these martyrs embodied. Traditional observances often include communal meals and acts of charity in their honor. The celebration serves as a living link to the ancient traditions and teachings of the Church.
feast day Abdecalas Anastasius Sinaita Anselm of Canterbury Beuno Conrad of Parzham Holy Infant of Good Health Shemon Bar Sabbae Wolbodo April 21 (Eastern Orthodox liturgics)

Natale di Roma(Rome)

Natale di Roma celebrates the legendary founding of Rome by Romulus on April 21, 753 BC, with parades and cultural events.
Dating back to ancient times, Natale di Roma honors the traditional birthday of Rome on April 21, 753 BC. Modern celebrations in the city include torchlit processions, historical reenactments, and events at the Circus Maximus. Participants dress in period costume to relive the era of the Roman kingdom and the myth of Romulus and Remus. Municipal concerts, banquets, and cultural exhibitions highlight Rome's enduring legacy in art, law, and architecture. This festival is a vibrant reminder of the city's origins and its central place in Western civilization.
Natale di Roma

Parilia(ancient Rome)

Parilia is an ancient Roman festival held on April 21 to purify shepherds and their flocks in honor of the deity Pales.
Established in Rome by King Numa Pompilius, Parilia was a pastoral festival dedicated to Pales, the protector of shepherds and livestock. Rituals included bonfires, garland offerings, and ceremonial cleaning of sheep pens to ensure purity and protection. Participants led their animals through three ritual fires as a symbolic act of purification and blessing. Over time, Parilia became intertwined with the celebration of Rome's founding, sharing the date of April 21. Today it is remembered as a window into ancient Roman religious and agricultural traditions.
Parilia

Civil Service Day(India)

Civil Service Day in India honors the dedication and achievements of the country's civil servants each April 21.
Observed annually since the early 2000s, Civil Service Day recognizes the contributions of government officials to India's development. The day features seminars, award ceremonies, and discussions on public administration reforms and innovation. Honors are presented to exemplary officers for outstanding service and leadership. The event encourages excellence, accountability, and efficiency within India's vast bureaucracy. It also provides a platform to share best practices and strengthen bonds between government departments.
Civil Service Day

Grounation Day(Rastafari)

Grounation Day is a major Rastafari celebration marking the arrival of Emperor Haile Selassie in Jamaica on April 21, 1966.
Grounation Day commemorates the historic visit of Emperor Haile Selassie to Jamaica in 1966, a pivotal moment for the Rastafari movement. Communities gather on April 21 to honor the spiritual significance of his arrival. Ceremonies include drumming, chanting, and reasoning sessions where members discuss faith, culture, and social issues. The event fosters unity and reflection through music, dance, and collective prayers. It remains one of the most sacred observances in the Rastafari calendar.
Grounation Day Rastafari

National Tea Day(United Kingdom)

National Tea Day in the UK celebrates brewing traditions with tastings, events, and community gatherings on April 21.
Created by industry groups to honor Britain's passion for tea, National Tea Day features events across cafes, hotels, and homes. British tea experts host tastings and masterclasses to showcase traditional blends and new infusions. High-profile endorsements and media campaigns encourage people to explore tea history and brewing techniques. Charity fundraisers often accompany celebrations, with proceeds supporting local causes and community tea projects. This day underscores the role of tea as a cultural icon and a unifying social ritual in British life.
National Tea Day

National Tree Planting Day(Kenya)

Kenya's National Tree Planting Day mobilizes citizens every April 21 to plant millions of trees and combat deforestation.
Established to address environmental degradation, National Tree Planting Day brings together communities, schools, and organizations across Kenya. Volunteers plant seedlings in urban and rural areas to restore forests and improve ecosystems. Government agencies and NGOs provide training on nursery management and tree care to ensure sapling survival. Annual reports highlight the number of trees planted and their impact on carbon sequestration and wildlife habitats. The event underscores Kenya's commitment to sustainable development and climate action.
National Tree Planting Day

San Jacinto Day(Texas)

San Jacinto Day commemorates the 1836 Battle of San Jacinto on April 21, a pivotal victory in the Texas Revolution.
Observed on April 21 in Texas, San Jacinto Day honors the battle where Texian forces defeated the Mexican army in just 18 minutes. The historic site near Houston includes the San Jacinto Monument and museum exhibits detailing the conflict and its leaders. Ceremonies feature reenactments, patriotic speeches, and educational programs for students. Texas government offices and some businesses observe the day with special events and promotions. It is a significant reminder of Texas's struggle for self-determination and its unique historical heritage.
San Jacinto Day

Abdecalas

Abdecalas is an early Christian martyr honored on April 21 by Eastern Orthodox faithful.
Saint Abdecalas suffered martyrdom for his faith during early church persecutions and is honored on April 21. His liturgical commemoration includes specific readings, hymns, and prayers that recall his steadfast witness. Believers seek his intercession for courage and fidelity in the face of trials. Many parishes organize charitable activities reflecting the saint's legacy of selfless service. The day provides a spiritual opportunity to connect with the Church's ancient history and values.
Abdecalas

Anastasius Sinaita

Anastasius Sinaita was a 7th-century monk and theologian commemorated on April 21 in Eastern Orthodox tradition.
Anastasius Sinaita authored influential works on monastic spirituality and theological doctrine in the Sinai monasteries. The Orthodox Church commemorates him on April 21 with liturgical services featuring readings from his treatises. His teachings emphasize the transformative power of prayer, ascetic practice, and inner stillness. Monastics and laypeople reflect on his insights into the spiritual life and theosis. This feast connects worshippers to the rich intellectual and mystical heritage of Byzantine monasticism.
Anastasius Sinaita

Anselm of Canterbury

Feast day honoring Saint Anselm of Canterbury, a pivotal medieval theologian and Archbishop of Canterbury.
Saint Anselm of Canterbury (1033–1109) was a Norman Benedictine monk, philosopher, and theologian revered as the father of scholasticism. He served as Archbishop of Canterbury from 1093 until his death, navigating complex disputes with the English monarchy. Anselm's notable works include the Proslogion, in which he presents the ontological argument for God's existence, and the Monologion. His intellectual rigor bridged faith and reason and influenced generations of philosophers and theologians. Born in Aosta, Italy, he became abbot of Bec in Normandy before his elevation to the episcopate. Pilgrims visit his shrine at Canterbury Cathedral to seek spiritual guidance and inspiration. Observed each April 21, his feast day celebrates his legacy of deep contemplative prayer and scholarly devotion.
Anselm of Canterbury

Beuno

Feast day of Saint Beuno, a 7th-century Welsh abbot known for missionary work and miracles.
Saint Beuno was a 7th-century Welsh monk and abbot who established monastic communities across Wales. He was renowned for his missionary zeal, healing miracles, and prophecies, including predicting the birth of Saint Winifred. Beuno founded the monastery at Clynnog Fawr, which became a pilgrimage site. His dedication to education and pastoral care left a lasting mark on early medieval Welsh Christianity. Pilgrims historically sought his intercession for physical and spiritual healing. His feast day on April 21 honors his enduring influence on Celtic monastic traditions. Celebrations often include prayer services and visits to ancient monastic ruins.
Beuno