Meghalaya celebrates its formation day today as it completes 40 years of its existence as a state of the Union of India. The State Government celebrates this day as the Meghalaya Day.Meghalaya, which means abode of clouds, first emerged as an autonomous state in the North-East region, bordering Bangladesh, on April 2, 1970, and as a full-fledged state on January 21, 1972.