sentences:  The Báb, the founder of Bábi religion, instituted the Badíʻ calendar composed of 19 months, each of 19 days.The first month, and the first day of each month, are both named Bahá, an Arabic word meaning splendour or glory.Thus Naw-Rúz, the first day of the year, is the day of Bahá in the month of Bahá.