Chad
Independence Day, 11 August (1960)
Chile
Independence Day, 18 September (1810)
China
Anniversary of the Founding of the People's Republic of China,
1 October (1949)
Christmas Island
Australia Day, 26 January (1788)
Cocos (Keeling) Islands
Australia Day, 26 January (1788)
Colombia
Independence Day, 20 July (1810)
Comoros
Independence Day, 6 July (1975)
Congo, Democratic Republic of the
Independence Day, 30 June (1960)
Congo, Republic of the
Independence Day, 15 August (1960)
Cook Islands
Constitution Day, first Monday in August (1965)