Oceanic eddies are also usually made of water masses that are different from those outside the eddy. That is, the water within an eddy usually has different temperature and salinity characteristics to the water outside the eddy. There is a direct link between the water mass properties of an eddy and its rotation.
It changed its name to Free, Sovereign and Independent Republic of Sri Lanka in 1968 and finally to its current name Democratic Socialist Republic of Sri Lanka in 1972. February 4 each year is celebrated as a national holiday in Sri Lanka.
Sri Lanka has more than 2,550 years of continuous written history by means of the Mahawansha, and was also mentioned in several ancient Indian texts. One of the most famous is the Ramayana, in which the island, which was referred to as Lanka, was the island fortress of the king Ravana. The Sinhalese arrived in Sri Lanka late in the 6th century BC, probably from northern India. Buddhism was introduced beginning in about the mid-3rd century BC, and a great civilization developed at such cities as Anuradhapura (kingdom from c. 200 BC to c. 1000 AD) and Polonnaruwa (c. 1070 to 1200).