On this day, October 31, in Ukraine and around the World:
Commemorative Events and Dates for Ukraine:
Reformation Day - observed by Protestants (Lutherans) in remembrance of the beginning of the Reformation, associated with the name of Martin Luther.
Sign Language Interpreter Day (professional).
Day of Workers of Pre-Trial Detention Centers (SIZO) and Prisons (professional).
International Observances and Commemorative Dates:
Halloween (Eve of All Saints' Day) - one of the most widely known holidays, celebrated in many countries, including Ukraine. It has Celtic roots and is associated with the end of the harvest and the beginning of the "dark" time of the year, when, according to beliefs, the boundary between the world of the living and the dead becomes thinner.
World Cities Day - established by the UN General Assembly to draw attention to the issues and opportunities of urbanization.
World Savings Day (International Saving Day) - observed to promote the idea of savings and financial literacy.
International Black Sea Day - dedicated to the preservation of the unique ecosystem of the Black Sea.
Church Dates (according to the New Calendar in Ukrainian Orthodoxy):
The memory of the Holy Apostles of the Seventy Stachys, Amplias, Urban, Narcissus, Apelles, and Aristobulus.