| Sl. No | Country | Date | Observed from |
| 1 | Afghanistan | August 19 | 1919 |
| 2 | Algeria | July 5 | 1962 |
| 3 | Antigua and Barbuda | November 1 | 1981 |
| 4 | Argentina | July 9 | 1816 |
| 5 | Armenia | May 28 | 1918 |
| 6 | Austria | October 26 | 1955 |
| 7 | Bangladesh | March 26 | 1971 |
| 8 | Belgium | July 21 | 1831 |
| 9 | Bolivia | August 6 | 1825 |
| 10 | Brazil | September 7 | 1822 |
| 11 | Bulgaria | March 3 | 1878 |
| 12 | Cambodia | November 9 | 1953 |
| 13 | Canada | July 1 | 1867 |
| 14 | Chile | September 18 | 1810 |
| 15 | Colombia | July 20 | 1810 |
| 16 | Costa Rica | September 15 | 1821 |
| 17 | Cuba | October 10 | 1868 |
| 18 | Czech Republic | October 28 | 1918 |
| 19 | Dominica | November 3 | 1978 |
| 20 | Ecuador | August 10 | 1809 |
| 21 | Fiji | October 10 | 1970 |
| 22 | Finland | December 6 | 1917 |
| 23 | France | July 14 | 1789 |
| 24 | Ghana | March 6 | 1957 |
| 25 | Guinea | October 2 | 1958 |
| 26 | Guyana | May 26 | 1966 |
| 27 | Haiti | January 1 | 1804 |
| 28 | Honduras | September 15 | 1821 |
| 29 | Iceland | June 17 | 1944 |
| 30 | India | August 15 | 1950 |
| 31 | Indonesia | August 17 | 1945 |
| 32 | Iran | April 1 | 1979 |
| 33 | Iraq | October 3 | 1932 |
| 34 | Ireland | April 24 | 1916 |
| 35 | Ivory Coast | August 7 | 1960 |
| 36 | Jordan | May 25 | 1946 |
| 37 | Kazakhstan | December 16 | 1991 |
| 38 | Kenya | December 12 | 1963 |
| 39 | North Korea | August 15 | 1948 |
| 40 | South Korea | March 1 | 1919 |
| 41 | Kuwait | February 25 | 1991 |
| 42 | Lebanon | November 22 | 1943 |
| 43 | Liberia | July 26 | 1847 |
| 44 | Maldives | July 26 | 1965 |
| 45 | Namibia | March 21 | 1990 |
| 46 | Nigeria | October 1 | 1960 |
| 47 | Norway | May 17 | 1814 |
| 48 | Oman | November 18 | 1650 |
| 49 | Pakistan | August 14 | 1947 |
| 50 | Panama | November 28 | 1821 |
| 51 | Peru | July 28 | 1821 |
| 52 | Philippines | June 12 | 1898 |
| 53 | Poland | November 11 | 1918 |
| 54 | Portugal | December 1 | 1640 |
| 55 | Singapore | August 9 | 1965 |
| 56 | Slovakia | July 17 | 1992 |
| 57 | South Africa | December 11 | 1931 |
| 58 | Sri Lanka | February 4 | 1948 |
| 59 | Sweden | June 6 | 1905 |
| 60 | Switzerland | August 1 | 1291 |
| 61 | Syria | April 17 | 1946 |
| 62 | Ukraine | August 24 | 1991 |
| 63 | United States | July 4 | 1776 |
| 64 | Uruguay | August 25 | 1825 |
| 65 | Uzbekistan | September 1 | 1991 |
| 66 | Venezuela | July 5 | 1811 |
| 67 | Vietnam | September 2 | 1945 |
| 68 | Zambia | October 24 | 1964 |
| 69 | Zimbabwe | April 18 | 1980 |
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