January
1 January – Republic of Cuba
1 January – Republic of the Sudan
26 January – Republic of India
26 January – The Commonwealth of Australia
31 January – Republic of Nauru
February
4 February – Democratic Socialist Republic of Sri Lanka
6 February – New Zealand
7 February – Grenada
11 February – Islamic Republic of Iran
15 February – Republic of Serbia
16 February – Republic of Lithuania
17 February – Republic of Kosovo
18 February – Republic of The Gambia
22 February – Saint Lucia
23 February – Brunei Darussalam
23 February – The Cooperative Republic of Guyana
23 February – Japan
24 February – Republic of Estonia
25 February – State of Kuwait
27 February – Dominican Republic
March
1 March – Bosnia and Herzegovina
3 March – Republic of Bulgaria
6 March – Republic of Ghana
12 March – Republic of Mauritius
13 March – The Apostolic Nunciature
17 March – Ireland
20 March – Republic of Tunisia
21 March – Republic of Namibia
23 March – Islamic Republic of Pakistan
25 March – Hellenic Republic
26 March – People’s Republic of Bangladesh
April
4 April – Republic of Senegal
17 April – Syrian Arab Republic
17 April – State of Israel (Varies according to the Hebrew calendar)
26 April – United Republic of Tanzania
27 April – Republic of South Africa
27 April – Republic of Sierra Leone
27 April – The Kingdom of the Netherlands
27 April – Togolese Republic
May
1 May – Republic of the Marshall Islands
10 May – Federated States of Micronesia
14 May – Republic of Paraguay
17 May – The Kingdom of Norway
20 May – Republic of Cameroon
22 May – Republic of Yemen
24 May – The State of Eritrea
25 May – Republic of Argentina
25 May – Hashemite Kingdom of Jordan
26 May – Georgia
28 May – Republic of Azerbaijan
28 May – Federal Democratic Republic of Ethiopia
30 May – Republic of Croatia
June
1 June – The Independent State of Samoa
2 June – Italian Republic
4 June – The Kingdom of Tonga
5 June – The Kingdom of Denmark
6 June – The Kingdom of Sweden
10 June – Republic of Portugal
12 June – Russian Federation
12 June – Republic of the Philippines
21 June – The United Kingdom of Great Britain and Northern Ireland
17 June – Iceland
18 June – Republic of Seychelles
23 June – Grand Duchy of Luxembourg
24 June – Sovereign Military Hospitaller Order of St John of Jerusalem, of Rhodes and of Malta
25 June – Republic of Slovenia
25 June – Republic of Mozambique
26 June – Republic of Madagascar
27 June – Republic of Djibouti
July
1 July – Canada
1 July – Federal Republic of Somalia
1 July – Republic of Rwanda
3 July – Republic of Belarus
4 July – United States of America
5 July – Bolivarian Republic of Venezuela
5 July – Republic of Cape Verde
6 July – Republic of Malawi
7 July – Solomon Islands
9 July – Republic of Palau
10 July – The Commonwealth of The Bahamas
11 July – Mongolia
12 July – Democratic Republic of São Tomé and Príncipe
13 July – Montenegro
14 July – French Republic
20 July – Republic of Colombia
21 July – The Kingdom of Belgium
23 July – Arab Republic of Egypt
26 July – Republic of Maldives
26 July – Republic of Liberia
28 July – Republic of Peru
30 July – Republic of Vanuatu
30 July – The Kingdom of Morocco
August
1 August – Republic of Benin
1 August – Swiss Confederation
1 August – Cook Islands (1st Monday)
6 August – Plurinational State of Bolivia
6 August – Jamaica
7 August – Republic of Ivory Coast
9 August – Republic of Singapore
10 August – Republic of Ecuador
15 August – Congo D.R.C.
15 August – The Principality of Liechtenstein
17 August – Republic of Indonesia
19 August – Islamic Republic of Afghanistan
24 August – Ukraine
25 August – Oriental Republic of Uruguay
27 August – Republic of Moldova
31 August – Republic of Trinidad and Tobago
31 August – Kyrgyz Republic
31 August – Malaysia
September
1 September – Republic of Uzbekistan
1 September – Slovak Republic
2 September – Socialist Republic of Vietnam
3 September – Republic of San Marino
6 September – Eswatini (formerly known as Swaziland)
7 September – Federative Republic of Brazil
8 September – The Principality of Andorra
8 September – Republic of North Macedonia
9 September – Republic of Tajikistan
9 September – Democratic People’s Republic of Korea
15 September – Republic of El Salvador
15 September – Republic of Guatemala
15 September – Republic of Honduras
15 September – Republic of Nicaragua
15 September – Republic of Costa Rica
16 September – United Mexican States
16 September – Independent State of Papua New Guinea
18 September – Republic of Chile
19 September – Federation of Saint Kitts and Nevis
20 September – Federal Democratic Republic of Nepal
21 September – Republic of Armenia
21 September – Belize
22 September – Republic of Mali
23 September – The Kingdom of Saudi Arabia
30 September – Republic of Botswana
October
1 October – People’s Republic of China
1 October – Republic of Cyprus
1 October – Federal Republic of Nigeria
1 October – Tuvalu
2 October – Republic of Guinea
3 October – Federal Republic of Germany
3 October – Republic of Korea
4 October – The Kingdom of Lesotho
9 October – Republic of Uganda
10 October – Republic of Fiji
12 October – The Kingdom of Spain
23 October – Hungary
24 October – Republic of Zambia
26 October – Republic of Austria
27 October – Turkmenistan
27 October – Saint Vincent and the Grenadines
28 October – The Czech Republic
29 October – Republic of Tȕrkiye
November
1 November – People’s Democratic Republic of Algeria
1 November – Antigua and Barbuda
3 November – The Commonwealth of Dominica
3 November – Republic of Panama
9 November – The Kingdom of Cambodia
11 November – Republic of Angola
11 November – Republic of Poland
15 November – State of Palestine
18 November – Republic of Latvia
18 November – The Sultanate of Oman
19 November – The Principality of Monaco
22 November – Republic of Lebanon
28 November – Republic of Albania
28 November – Timor-leste
28 November – Islamic Republic of Mauritania
30 November – Barbados
December
1 December – Romania
2 December – United Arab Emirates
2 December – Laos People’s Democratic Republic
5 December – The Kingdom of Thailand
6 December – Republic of Finland
11 December – Burkina Faso
12 December – Republic of Kenya
16 December – The Kingdom of Bahrain
16 December – Republic of Kazakhstan
17 December – Bhutan
18 December – Republic of Niger
18 December – State of Qatar
24 December – Libya