Every year on 18th September, Khasi & Jaintia Hills gets a public holiday for Unitarian Day, a day when Hajom Kissor Singh Lyngdoh Nongbri led the first real Unitarian church service in his home in Jowai in 1887. Apart from the small and influential population of Khasi-Jaintia Unitarians for whom the day has historical and personal meaning others just enjoy the holiday without knowing the historical significance of the Day. For a small faith group worldwide as well as locally, Unitarians suffer from ignorance of society at large. Are Unitarians Christians? What do Unitarians believe in? What does Unitarian mean? So here it goes - a short guide to Unitarianism for you to read this 18th September.