The days of Ayyám-i-Há are celebrated in the Bahá'í Faith, with hospitality, service and glorification of God's Name; the purpose of which are to prepare the Bahá'í world for the nineteen-day Fast and Naw-Rúz (Bahá'í New Year).

Through simple, melodic rhymes, this book teaches children the meaning, purpose and the joyful spirit the days of Ayyám-i-Há create around the world. Over 24 countries and 20 languages are represented in the books Celebrating Ayyám-i-Há Around the World and Observing the Fast & Celebrating Naw-Rúz Around the World.