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.

Thanksgiving Day in the Turks and Caicos Islands (TCI) is a public holiday that shares its date with the American Thanksgiving but is celebrated in a distinctly local and spiritual way, rooted in the islands' religious traditions, community values, and agricultural heritage.

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.