sentences:  The traditional Nowruz holiday, from which the Baha'i holiday derives, has been celebrated since ancient times in Iran, and is observed by culturally-adjacent peoples in Azerbaijan, Turkey, Iraq, Armenia, Georgia, Russia, Afghanistan, Pakistan, Syria, and Tajikistan.The Báb, the founder of Bábism, and then Baháʼu'lláh, the founder of the Baháʼí Faith, adopted the day as a holy day and associated it with the "Most Great Name" of God.The Baha'i holiday as now calculated does not always fall on the same day as the traditional festival (but may differ by one day), and does not incorporate a number of Persian cultural practices associated with the traditional holiday, but is a religious event featuring readings from Baha'i scriptures.