All Saints' Day is a Christian holy day dedicated to honoring all saints, both known and unknown, who have attained Heaven. It is observed by the Roman Catholic Church, Eastern Orthodox Church, Anglican Communion, and many other Protestant denominations.

All Saints’ Day in Finland is a solemn day dedicated to honoring all saints and the memory of departed loved ones, marked by church services and the tradition of lighting candles on graves, which illuminate cemeteries across Finland during the dark autumn nights.

All Souls' Day is dedicated to praying for the souls of the faithful departed, particularly those in Purgatory, undergoing purification before entering Heaven. It is a significant day in the Catholic Church and other Christian traditions that honor the dead.

St. Martin's Day, also known as Martinmas, is celebrated on November 11 in honor of St. Martin of Tours, a 4th-century bishop and one of Christianity's most revered saints. It is widely observed in Europe and some parts of the world with a mix of religious and cultural traditions.

St. Leopold’s Day in Lower Austria is both a religious feast and a regional celebration, reflecting centuries of devotion to the margrave who shaped Austria's early history. The day highlights Lower Austria’s pride in its patron saint and keeps alive traditions that date back to the Middle Ages.

Repentance and Prayer Day is a Christian observance focused on personal reflection and repentance of sins. It has its roots in Christian teachings and has been recognized historically in various countries, particularly in Germany and parts of Europe.