Holiday overview

Reformation Day

Reformation Day commemorates Martin Luther's posting of the Ninety-five Theses, a pivotal event in the Protestant Reformation, observed on October 31.

Ownership: International holiday

Scope: Global

Categories: National Public Holidays Observances & Non-Work Holidays

Tags: Religious National Memorial

Usually a public holiday

Religious tradition: Christianity (Protestant)

Date rule: October 31 every year

Date type: Fixed date

About this holiday

Reformation Day commemorates Martin Luther's posting of the Ninety-five Theses, a pivotal event in the Protestant Reformation, observed on October 31.

Where and when this holiday appears

Date	Weekday	Countries
October 31, 2025	Friday	Germany
October 31, 2026	Saturday	Germany
October 31, 2027	Sunday	Germany