September 30. On this date in 1968, the Local Spiritual Assembly of Chicago wrote the Universal House of Justice that "there should be one day in the year in which all of the religions should agree," to which the Universal House of Justice replied "However, this is not the underlying concept of World Religion Day, which is a celebration of the need for and the coming of a world religion for mankind, the Bahá'í Faith itself. Although there have been many ways of expressing the meaning of this celebration in Bahá'í communities in the United States, the Day was not meant primarily to provide a platform for all religions and their emergent ecumenical ideas."

September 30. On this date in 1968, the Local Spiritual Assembly of Chicago wrote the Universal House of Justice that "there should be one day in the year in which all of the religions should agree," to which the Universal House of Justice replied "However, this is not the underlying concept of World Religion Day, which is a celebration of the need for and the coming of a world religion for mankind, the Bahá'í Faith itself. Although there have been many ways of expressing the meaning of this celebration in Bahá'í communities in the United States, the Day was not meant primarily to provide a platform for all religions and their emergent ecumenical ideas."

1710. World Religion Day, Purpose of
Your letter of September 30, with the suggestion that 'there should be one day in the year in which all of the religions should agree' is a happy thought, and one which persons of good will throughout the world might well hail. However, this is not the underlying concept of World Religion Day, which is a celebration of the need for and the coming of a world religion for mankind, the Bahá'í Faith itself. Although there have been many ways of expressing the meaning of this celebration in Bahá'í communities in the United States, the Day was not meant primarily to provide a platform for all religions and their emergent ecumenical ideas. In practice, there is no harm in the Bahá'í communities' inviting the persons of other religions to share their platforms on this Day, providing the universality of the Bahá'í Faith as the fulfillment of the hopes of mankind for a universal religion are clearly brought forth."
(From a letter of the Universal House of Justice to the Local Spiritual Assembly of Chicago, October 22, 1968)