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.
The official name of the nation is the Democratic Socialist Republic of Sri Lanka. In 1972, the national constitution discarded the name Ceylon and adopted the name of Sri Lanka. In Sinhala, the language of the majority, Sri means blessed and Lanka is the name of the island. The island's history of immigration, trade, and colonial invasion has led to the formation of a variety of ethnic groups, each with its own language and religious traditions.