Indian Atheist Day is a day of national importance all over in India. It is known as a Shahid Day also. This day has been promoted by various Atheist Rational Humanistic Organisations in India to propagate atheism humanism free and humanistic thinking and to bring Indian Atheists together. It is a holiday in some states in India. This Day is associated with execution to death of Shahid Bhagat Singh on 23 March 1931.