Somalia
Foundation of the Somali Republic, 1 July (1960); note - 26
June (1960) in Somaliland
South Africa
Freedom Day, 27 April (1994)
South Georgia and the South Sandwich Islands
Liberation Day, 14 June
(1982)
Spain
National Day, 12 October
Sri Lanka
Independence Day, 4 February (1948)
Sudan
Independence Day, 1 January (1956)
Suriname
Independence Day, 25 November (1975)
Svalbard
NA
Swaziland
Independence Day, 6 September (1968)
Sweden
Flag Day, 6 June