| 01/01 | Greece | 1952 |
| 01/01 | Tuvalu | 1947 |
| 01/02 | Cuba | 1934 |
| 01/03 | Nauru | 1968 |
| 01/06 | Vietnam | 1946 |
| 01/25 | Honduras | 1955 |
| 01/31 | Kazakhstan | 1924 |
| 01/31 | Yugoslavia | 1946 |
| 02/01 | Italy | 1945 |
| 02/02 | Armenia | 1921 |
| 02/02 | United Kingdom | 1918 |
| 02/04 | Belarus | 1919 |
| 02/07 | Switzerland | 1971 |
| 02/15 | Mexico | 1947 |
| 02/15 | Papua New Guinea | 1964 |
| 02/18 | Bahamas | 1961 |
| 02/19 | Senegal | 1945 |
| 02/29 | Czech Republic | 1920 |
| 03/01 | Botswana | 1965 |
| 03/03 | Ecuador | 1929 |
| 03/08 | International Women's Day | |
| 03/10 | Ukraine | 1919 |
| 03/20 | Sri Lanka | 1931 |
| 03/25 | Belize | 1954 |
| 03/27 | Belgium | 1948 |
| 03/28 | Venezuela | 1946 |
| 04/02 | Palau | 1979 |
| 04/03 | Turkey | 1930 |
| 04/04 | Moldova | 1978 |
| 04/14 | Andora | 1970 |
| 04/21 | France | 1944 |
| 04/21 | Nicaragua | 1955 |
| 04/24 | Sweden | 1919 |
| 04/27 | Sierra Leone | 1961 |
| 08/09 | South Africa | 1956 |
| 04/29 | San Marino | 1959 |
| 04/29 | Madagascar | 1959 |
| 04/30 | Lesotho | 1965 |
| 04/30 | Philippines | 1937 |
| 05/01 | Marshall Islands | 1979 |
| 05/03 | Democratic Republic of the Congo | 1967 |
| 05/05 | Portugal | 1931 |
| 05/05 | Saint Vincent and the Grenadines | 1951 |
| 05/07 | Liberia | 1946 |
| 05/09 | Netherlands | 1919 |
| 05/15 | Israel | 1948 |
| 05/15 | Luxembourg | 1919 |
| 05/16 | Kuwait | 2005 |
| 05/19 | Azerbaijan | 1921 |
| 05/20 | Mauritania | 1961 |
| 05/23 | Gabon | 1956 |
| 06/01 | Tunisia | 1959 |
| 06/02 | Ireland | 1918 |
| 06/05 | Denmark | 1915 |
| 06/11 | Norway | 1907 |
| 06/12 | Australia | 1962 |
| 06/19 | Iceland | 1915 |
| 06/20 | Finland | 1906 |
| 06/23 | Egypt | 1956 |
| 06/25 | Mozambique | 1975 |
| 07/01 | Liechtenstein | 1984 |
| 07/05 | Algeria | 1962 |
| 07/05 | Panama | 1941 |
| 07/12 | Sao Tome and Principe | 1975 |
| 07/16 | Brazil | 1934 |
| 07/18 | Singapore | 1947 |
| 08/06 | Seychelles | 1948 |
| 08/10 | Slovenia | 1945 |
| 08/11 | Croatia | 1945 |
| 08/16 | Cyprus | 1960 |
| 08/26 | USA | 1920 |
| 08/22 | Togo | 1945 |
| 08/25 | Columbia | 1954 |
| 08/31 | Malaysia | 1957 |
| 09/05 | Malta | 1947 |
| 09/06 | Swaziland | 1968 |
| 09/07 | Peru | 1955 |
| 09/10 | Syria | 1949 |
| 09/19 | New Zealand | 1893 |
| 09/25 | Rwanda | 1961 |
| 09/29 | Argentina | 1947 |
| 10/01 | China | 1949 |
| 10/02 | Guinea | 1958 |
| 10/05 | Lithuania | 1921 |
| 10/16 | Bulgaria | 1944 |
| 10/23 | Barbados | 1950 |
| 10/24 | Bahrain | 2002 |
| 10/30 | Zambia | 1962 |
| 11/01 | Mongolia | 1924 |
| 11/03 | Federated States of Micronesia | 1979 |
| 11/04 | Bangladesh | 1972 |
| 11/04 | Ethiopia | 1955 |
| 11/04 | Lebanon | 1952 |
| 11/07 | Namibia | 1989 |
| 11/11 | Angola | 1975 |
| 11/12 | Austria | 1918 |
| 11/12 | Germany | 1918 |
| 11/15 | Kiribati | 1947 |
| 11/17 | Costa Rica | 1949 |
| 11/18 | Latvia | 1918 |
| 11/28 | Poland | 1918 |
| 11/20 | Jamaica | 1944 |
| 11/24 | Estonia | 1918 |
| 11/25 | Haiti | 1950 |
| 12/01 | Antigua & Barbuda | 1951 |
| 12/09 | Spain | 1931 |
| 12/09 | Suriname | 1948 |
| 12/10 | Thailand | 1932 |
| 12/12 | Kenya | 1963 |
| 12/16 | UAE | 2006 |
| 12/16 | Uruguay | 1932 |
| 12/17 | Japan | 1945 |
| 12/17 | Monaco | 1962 |
| 12/31 | Macedonia | 1946 |
