Reformation Day commemorates the beginning of the Protestant Reformation. It marks the day in 1517 when Martin Luther, a German monk and theologian, is traditionally believed to have nailed his 95 Theses to the door of the Wittenberg Castle Church.

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 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.

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.

St. Andrew's Day honors St. Andrew, one of the twelve apostles of Jesus and the patron saint of Scotland, Greece, Russia and other countries. It is a day of religious observance and cultural celebration, especially in Scotland, where it is a national holiday.