Slovenia
Independence Day/Statehood Day, 25 June (1991)
Solomon Islands
Independence Day, 7 July (1978)
Somalia
Foundation of the Somali Republic, 1 July (1960); note - 26
June (1960) in Somaliland
South Africa
Freedom Day, 27 April (1994)
Spain
National Day, 12 October (1492); year when Columbus first set
foot in the Americas
Sri Lanka
Independence Day, 4 February (1948)
Sudan
Independence Day, 1 January (1956)
Suriname
Independence Day, 25 November (1975)
Swaziland
Independence Day, 6 September (1968)
Sweden
Swedish Flag Day, 6 June (1916); National Day, 6 June (1983)