| Date | Country | Holiday name |
|---|---|---|
| 2031-04-01 |  Cyprus | Cyprus National Day |
| 2031-04-01 |  Iran | Islamic Republic Day |
| 2031-04-01 |  San Marino | Inauguration Ceremony |
| 2031-04-01 |  Vietnam | Hung Kings Commemorations |
| 2031-04-01 |  Jordan | Arafat Day (estimated) |
| 2031-04-01 |  Kuwait | Arafat Day (estimated) |
| 2031-04-01 |  Saudi Arabia | Arafat Day (estimated) |
| 2031-04-01 |  Bahrain | Arafat Day |
| 2031-04-01 |  Djibouti | Arafat Day |
| 2031-04-01 |  Spain | Arafat Day |
| 2031-04-01 |  Libya | Arafat Day |
| 2031-04-01 |  Malaysia | Arafat Day |
| 2031-04-02 |  Argentina | Day of the veterans and the fallen in Malvinas War |
| 2031-04-02 | Iran | Sizdah Bedar |
| 2031-04-02 | Jordan | Eid al-Adha (estimated) |
| 2031-04-02 |  Kazakhstan | Eid al-Adha (estimated) |
| 2031-04-02 | Kuwait | Eid al-Adha (estimated) |
| 2031-04-02 | Saudi Arabia | Eid al-Adha Holiday (estimated) |
| 2031-04-02 |  Timor Leste | Eid al-Adha (estimated) |
| 2031-04-02 |  Uzbekistan | Eid al-Adha (estimated) |
| 2031-04-02 |  United Arab Emirates | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Albania | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Azerbaijan | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Bosnia and Herzegovina | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  People's Republic of Bangladesh | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Burkina Faso | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 | Bahrain | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Burundi | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Benin | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Brunei | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Cocos (Keeling) Islands | Hari Raya Haji |
| 2031-04-02 |  Central African Republic | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Republic of Côte d'Ivoire | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Cameroon | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Christmas Island | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 | Djibouti | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Algeria | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Egypt | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Western Sahara | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Eritrea | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 | Spain | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Ethiopia | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Gabon | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Ghana | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  The Gambia | Tabaski |
| 2031-04-02 |  Guinea | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Guinea-Bissau | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Guyana | Eid Ul Adha |
| 2031-04-02 |  Indonesia | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 | Iran | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Kenya | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Comoros | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 | Libya | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Kingdom of Morocco | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Montenegro | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Madagascar | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Republic of Mali | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Mauritania | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 | Malaysia | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Republic of the Niger | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Nigeria | Id el Kabir |
| 2031-04-02 |  Philippines | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Rwanda | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Sudan | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Singapore | Hari Raya Haji |
| 2031-04-02 |  Sierra Leone | Tabaski |
| 2031-04-02 |  Senegal | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Somalia | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Suriname | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Chad | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Tunisia | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Turkey | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Tanzania | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Uganda | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-02 |  Kosovo | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-03 |  Switzerland | Näfelser Fahrt |
| 2031-04-03 | Guinea | National Holiday |
| 2031-04-03 | Jordan | Eid al-Adha Holiday (estimated) |
| 2031-04-03 | Kuwait | Eid al-Adha Holiday (estimated) |
| 2031-04-03 | Saudi Arabia | Eid al-Adha Holiday (estimated) |
| 2031-04-03 | Azerbaijan | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-03 | Malaysia | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-03 |  Togolese Republic | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-04 |  Angola | Peace Day |
| 2031-04-04 | Senegal | National Holiday |
| 2031-04-04 |  Taiwan | Children's Day |
| 2031-04-04 | Jordan | Eid al-Adha Holiday (estimated) |
| 2031-04-04 | Kuwait | Eid al-Adha Holiday (estimated) |
| 2031-04-04 | Saudi Arabia | Eid al-Adha Holiday (estimated) |
| 2031-04-04 |  South Sudan | Feast of the Sacrifice (Eid al-Adha) |
| 2031-04-05 |  China | Qingming Festival |
| 2031-04-05 |  Hong Kong | Qingming Festival |
| 2031-04-05 | Taiwan | Tomb Sweeping Day |
| 2031-04-06 | Burundi | Ntaryamira Day |
| 2031-04-06 | Cocos (Keeling) Islands | Self Determination Day |
| 2031-04-06 |  Thailand | Chakri Memorial Day |
| 2031-04-06 | Saudi Arabia | Eid al-Adha Holiday (observed, estimated) |
| 2031-04-07 |  Mozambique | Women’s Day |
| 2031-04-07 | Rwanda | Genocide Memorial Day |
| 2031-04-07 | Tanzania | Karume Day |
| 2031-04-08 |  Israel | Passover (Pesach) |
| 2031-04-08 | Montenegro | Pesach |
| 2031-04-09 |  Georgia | National Unity Day |
| 2031-04-09 | Philippines | Day of Valor |
| 2031-04-09 | Tunisia | عيد الشهداء |
| 2031-04-09 | Kosovo | Constitution Day |
| 2031-04-10 | Argentina | Maundy Thursday |
| 2031-04-10 |  Colombia | Maundy Thursday |
| 2031-04-10 |  Costa Rica | Maundy Thursday |
| 2031-04-10 |  Denmark | Maundy Thursday |
| 2031-04-10 |  Ecuador | Maundy Thursday |
| 2031-04-10 | Spain | Maundy Thursday |
| 2031-04-10 |  Faroe Islands | Maundy Thursday |
| 2031-04-10 |  Greenland | Maundy Thursday |
| 2031-04-10 |  Guatemala | Maundy Thursday |
| 2031-04-10 |  Honduras | Maundy Thursday |
| 2031-04-10 | Canary Islands | Maundy Thursday |
| 2031-04-10 |  Iceland | Maundy Thursday |
| 2031-04-10 |  Nicaragua | Maundy Thursday |
| 2031-04-10 |  Norway | Maundy Thursday |
| 2031-04-10 |  Peru | Maundy Thursday |
| 2031-04-10 | Philippines | Maundy Thursday |
| 2031-04-10 |  Paraguay | Maundy Thursday |
| 2031-04-10 |  Svalbard & Jan Mayen | Maundy Thursday |
| 2031-04-10 |  El Salvador | Maundy Thursday |
| 2031-04-10 |  Uruguay | Maundy Thursday |
| 2031-04-10 |  Venezuela | Maundy Thursday |
| 2031-04-10 |  U.S. Virgin Islands | Maundy Thursday |
| 2031-04-10 | Iran | Eid al-Ghadeer |
| 2031-04-11 |  Andorra | Good Friday |
| 2031-04-11 |  Antigua & Barbuda | Good Friday |
| 2031-04-11 |  Anguilla | Good Friday |
| 2031-04-11 | Angola | Good Friday |
| 2031-04-11 | Argentina | Good Friday |
| 2031-04-11 |  Australia | Good Friday |
| 2031-04-11 |  Aruba | Good Friday |
| 2031-04-11 |  Ã…land Islands | Good Friday |
| 2031-04-11 |  Barbados | Good Friday |
| 2031-04-11 |  Bulgaria | Good Friday |
| 2031-04-11 |  Bermuda | Good Friday |
| 2031-04-11 |  Bolivia | Good Friday |
| 2031-04-11 |  Caribbean Netherlands | Good Friday |
| 2031-04-11 |  Brazil | Good Friday |
| 2031-04-11 |  Bahamas | Good Friday |
| 2031-04-11 |  Botswana | Good Friday |
| 2031-04-11 |  Belize | Good Friday |
| 2031-04-11 |  Canada | Good Friday |
| 2031-04-11 | Switzerland | Good Friday |
| 2031-04-11 |  Cook Islands | Good Friday |
| 2031-04-11 |  Chile | Good Friday |
| 2031-04-11 | Cameroon | Good Friday |
| 2031-04-11 | Colombia | Good Friday |
| 2031-04-11 | Costa Rica | Gesta Heroica de Juan SantamarÃa |
| 2031-04-11 | Costa Rica | Good Friday |
| 2031-04-11 |  Cuba | Good Friday |
| 2031-04-11 |  Cape Verde | Good Friday |
| 2031-04-11 |  Curaçao | Good Friday |
| 2031-04-11 | Christmas Island | Good Friday |
| 2031-04-11 | Cyprus | Good Friday |
| 2031-04-11 |  Czech Republic | Good Friday |
| 2031-04-11 |  Germany | Good Friday |
| 2031-04-11 | Denmark | Good Friday |
| 2031-04-11 |  Dominica | Good Friday |
| 2031-04-11 |  Dominican Republic | Good Friday |
| 2031-04-11 | Ecuador | Good Friday |
| 2031-04-11 |  Estonia | Good Friday |
| 2031-04-11 | Eritrea | Orthodox Good Friday |
| 2031-04-11 | Spain | Good Friday |
| 2031-04-11 | Ethiopia | Good Friday |
| 2031-04-11 |  Finland | Good Friday |
| 2031-04-11 |  Fiji | Good Friday |
| 2031-04-11 | Faroe Islands | Good Friday |
| 2031-04-11 |  United Kingdom | Good Friday |
| 2031-04-11 |  Grenada | Good Friday |
| 2031-04-11 | Georgia | Good Friday |
| 2031-04-11 |  Guernsey | Good Friday |
| 2031-04-11 | Ghana | Good Friday |
| 2031-04-11 |  Gibraltar | Good Friday |
| 2031-04-11 | Greenland | Good Friday |
| 2031-04-11 | The Gambia | Good Friday |
| 2031-04-11 |  Guadeloupe | Good Friday |
| 2031-04-11 |  Republic of Equatorial Guinea | Good Friday |
| 2031-04-11 |  Greece | Good Friday |
| 2031-04-11 | Guatemala | Good Friday |
| 2031-04-11 | Guyana | Good Friday |
| 2031-04-11 | Hong Kong | Good Friday |
| 2031-04-11 | Honduras | Good Friday |
| 2031-04-11 |  Haiti | Good Friday |
| 2031-04-11 |  Hungary | Good Friday |
| 2031-04-11 | Canary Islands | Good Friday |
| 2031-04-11 | Indonesia | Good Friday |
| 2031-04-11 |  Isle of Man | Good Friday |
| 2031-04-11 | Iceland | Good Friday |
| 2031-04-11 |  Jersey | Good Friday |
| 2031-04-11 |  Jamaica | Good Friday |
| 2031-04-11 | Kenya | Good Friday |
| 2031-04-11 |  St. Kitts & Nevis | Good Friday |
| 2031-04-11 |  Cayman Islands | Good Friday |
| 2031-04-11 |  St. Lucia | Good Friday |
| 2031-04-11 |  Lichtenstein | Good Friday |
| 2031-04-11 |  Liberia | Fast and Prayer Day |
| 2031-04-11 |  Lesotho | Good Friday |
| 2031-04-11 |  Latvia | Good Friday |
| 2031-04-11 | Montenegro | Good Friday |
| 2031-04-11 |  Martinique | Good Friday |
| 2031-04-11 |  Montserrat | Good Friday |
| 2031-04-11 |  Malta | Good Friday |
| 2031-04-11 |  Malawi | Good Friday |
| 2031-04-11 | Malaysia | Good Friday |
| 2031-04-11 |  Namibia | Good Friday |
| 2031-04-11 | Nigeria | Good Friday |
| 2031-04-11 | Nicaragua | Good Friday |
| 2031-04-11 | Norway | Good Friday |
| 2031-04-11 |  New Zealand | Good Friday |
| 2031-04-11 |  Panama | Good Friday |
| 2031-04-11 | Peru | Good Friday |
| 2031-04-11 | Philippines | Good Friday |
| 2031-04-11 |  Portugal | Good Friday |
| 2031-04-11 | Paraguay | Good Friday |
| 2031-04-11 |  Romania | Good Friday |
| 2031-04-11 |  Serbia | Orthodox Good Friday |
| 2031-04-11 | Rwanda | Good Friday |
| 2031-04-11 |  Seychelles | Good Friday |
| 2031-04-11 |  Sweden | Good Friday |
| 2031-04-11 | Singapore | Good Friday |
| 2031-04-11 |  St. Helena | Good Friday |
| 2031-04-11 | Svalbard & Jan Mayen | Good Friday |
| 2031-04-11 |  Slovakia | Good Friday |
| 2031-04-11 | Sierra Leone | Good Friday |
| 2031-04-11 | Suriname | Good Friday |
| 2031-04-11 | El Salvador | Good Friday |
| 2031-04-11 |  Sint Maarten | Good Friday |
| 2031-04-11 |  Swaziland | Good Friday |
| 2031-04-11 |  Turks & Caicos Islands | Good Friday |
| 2031-04-11 |  Tonga | Good Friday |
| 2031-04-11 |  Trinidad & Tobago | Good Friday |
| 2031-04-11 | Tanzania | Good Friday |
| 2031-04-11 | Uganda | Good Friday |
| 2031-04-11 | Uruguay | Good Friday |
| 2031-04-11 |  St. Vincent & Grenadines | Good Friday |
| 2031-04-11 | Venezuela | Good Friday |
| 2031-04-11 |  British Virgin Islands | Good Friday |
| 2031-04-11 | U.S. Virgin Islands | Good Friday |
| 2031-04-11 |  Vanuatu | Good Friday |
| 2031-04-11 |  South Africa | Good Friday |
| 2031-04-11 |  Zambia | Good Friday |
| 2031-04-11 |  Zimbabwe | Good Friday |
| 2031-04-11 | Timor Leste | Holy Friday |
| 2031-04-11 |  Papua New Guinea | Good Friday |
| 2031-04-11 |  United States of America | Good Friday (KY) |
| 2031-04-12 | Australia | Easter Saturday |
| 2031-04-12 | Botswana | Easter Saturday |
| 2031-04-12 | Belize | Easter Saturday |
| 2031-04-12 | Fiji | Easter Saturday |
| 2031-04-12 | Georgia | Easter Saturday |
| 2031-04-12 | Guatemala | Easter Saturday |
| 2031-04-12 | Hong Kong | Easter Saturday |
| 2031-04-12 | Seychelles | Easter Saturday |
| 2031-04-12 | El Salvador | Easter Saturday |
| 2031-04-12 | Papua New Guinea | Holy Saturday |
| 2031-04-13 | Andorra | Easter Sunday |
| 2031-04-13 | Albania | Catholic Easter |
| 2031-04-13 | Albania | Orthodox Easter |
| 2031-04-13 |  Austria | Easter Sunday |
| 2031-04-13 | Australia | Easter Sunday |
| 2031-04-13 | Bosnia and Herzegovina | Easter Sunday |
| 2031-04-13 | Bosnia and Herzegovina | Orthodox Easter |
| 2031-04-13 | Burkina Faso | Easter Sunday |
| 2031-04-13 | Bulgaria | Easter Sunday |
| 2031-04-13 | Canada | Easter Sunday |
| 2031-04-13 | Switzerland | Easter Sunday |
| 2031-04-13 | Chile | Easter Sunday |
| 2031-04-13 | Colombia | Easter Sunday |
| 2031-04-13 | Cyprus | Easter Sunday |
| 2031-04-13 | Denmark | Easter Sunday |
| 2031-04-13 | Estonia | Easter Sunday |
| 2031-04-13 | Eritrea | Orthodox Easter |
| 2031-04-13 | Ethiopia | Easter Sunday |
| 2031-04-13 | Finland | Easter Sunday |
| 2031-04-13 | Faroe Islands | Easter Sunday |
| 2031-04-13 | Georgia | Easter Sunday |
| 2031-04-13 | Greenland | Easter Sunday |
| 2031-04-13 | Greece | Easter Sunday |
| 2031-04-13 | Hong Kong | Easter Sunday |
| 2031-04-13 |  Croatia | Easter Sunday |
| 2031-04-13 | Haiti | Easter Sunday |
| 2031-04-13 | Hungary | Easter Sunday |
| 2031-04-13 |  Ireland | Easter Sunday |
| 2031-04-13 | Iceland | Easter Sunday |
| 2031-04-13 |  Italia | Easter Sunday |
| 2031-04-13 | Kenya | Easter Sunday |
| 2031-04-13 |  Lithuania | Easter Sunday |
| 2031-04-13 | Latvia | Easter Sunday |
| 2031-04-13 |  Moldova | Easter Sunday |
| 2031-04-13 | Montenegro | Easter Sunday |
| 2031-04-13 | Madagascar | Easter Sunday |
| 2031-04-13 |  Macedonia | Orthodox Easter |
| 2031-04-13 |  Netherlands | Easter Sunday |
| 2031-04-13 | Norway | Easter Sunday |
| 2031-04-13 | Peru | Easter Sunday |
| 2031-04-13 | Philippines | Easter Sunday |
| 2031-04-13 |  Poland | Easter Sunday |
| 2031-04-13 | Portugal | Easter Sunday |
| 2031-04-13 | Romania | Easter Sunday |
| 2031-04-13 | Serbia | Orthodox Easter |
| 2031-04-13 | Seychelles | Easter Sunday |
| 2031-04-13 | Sudan | Coptic Easter |
| 2031-04-13 |  Slovenia | Easter Sunday |
| 2031-04-13 | Svalbard & Jan Mayen | Easter Sunday |
| 2031-04-13 | San Marino | Easter Sunday |
| 2031-04-13 | Sint Maarten | Easter Sunday |
| 2031-04-13 | Thailand | Songkran Festival |
| 2031-04-13 | Trinidad & Tobago | Easter Sunday |
| 2031-04-13 |  Ukraine | Orthodox Easter |
| 2031-04-13 | Uganda | Easter Sunday |
| 2031-04-13 | Venezuela | Easter Sunday |
| 2031-04-13 | Kosovo | Easter Sunday |
| 2031-04-13 | Kosovo | Orthodox Easter |
| 2031-04-13 | Papua New Guinea | Easter Sunday |
| 2031-04-14 | Andorra | Easter Monday |
| 2031-04-14 | Antigua & Barbuda | Easter Monday |
| 2031-04-14 | Anguilla | Easter Monday |
| 2031-04-14 | Albania | Catholic Easter |
| 2031-04-14 | Albania | Orthodox Easter |
| 2031-04-14 | Austria | Easter Monday |
| 2031-04-14 | Australia | Easter Monday |
| 2031-04-14 | Aruba | Easter Monday |
| 2031-04-14 | Ã…land Islands | Easter Monday |
| 2031-04-14 | Bosnia and Herzegovina | Easter Monday |
| 2031-04-14 | Barbados | Easter Monday |
| 2031-04-14 | People's Republic of Bangladesh | Bengali New Year's Day |
| 2031-04-14 |  Belgium | Easter Monday |
| 2031-04-14 | Burkina Faso | Easter Monday |
| 2031-04-14 | Bulgaria | Easter Monday |
| 2031-04-14 | Benin | Easter Monday |
| 2031-04-14 |  St. Barths | Easter Monday |
| 2031-04-14 | Caribbean Netherlands | Easter Monday |
| 2031-04-14 | Bahamas | Easter Monday |
| 2031-04-14 | Botswana | Easter Monday |
| 2031-04-14 | Belize | Easter Monday |
| 2031-04-14 | Canada | Easter Monday |
| 2031-04-14 | Cocos (Keeling) Islands | Easter Monday |
| 2031-04-14 | Central African Republic | Easter Monday |
| 2031-04-14 |  Republic of the Congo | Easter Monday |
| 2031-04-14 | Switzerland | Easter Monday |
| 2031-04-14 | Republic of Côte d'Ivoire | Easter Monday |
| 2031-04-14 | Cook Islands | Easter Monday |
| 2031-04-14 | Curaçao | Easter Monday |
| 2031-04-14 | Cyprus | Easter Monday |
| 2031-04-14 | Czech Republic | Easter Monday |
| 2031-04-14 | Germany | Easter Monday |
| 2031-04-14 | Denmark | Easter Monday |
| 2031-04-14 | Dominica | Easter Monday |
| 2031-04-14 | Egypt | Sham El Nessim |
| 2031-04-14 | Spain | Easter Monday |
| 2031-04-14 | Finland | Easter Monday |
| 2031-04-14 | Fiji | Easter Monday |
| 2031-04-14 | Faroe Islands | Easter Monday |
| 2031-04-14 |  France | Easter Monday |
| 2031-04-14 | Gabon | Easter Monday |
| 2031-04-14 | United Kingdom | Easter Monday |
| 2031-04-14 | Grenada | Easter Monday |
| 2031-04-14 | Georgia | Easter Monday |
| 2031-04-14 |  French Guiana | Easter Monday |
| 2031-04-14 | Guernsey | Easter Monday |
| 2031-04-14 | Ghana | Easter Monday |
| 2031-04-14 | Gibraltar | Easter Monday |
| 2031-04-14 | Greenland | Easter Monday |
| 2031-04-14 | The Gambia | Easter Monday |
| 2031-04-14 | Guinea | Easter Monday |
| 2031-04-14 | Guadeloupe | Easter Monday |
| 2031-04-14 | Greece | Easter Monday |
| 2031-04-14 | Guyana | Easter Monday |
| 2031-04-14 | Hong Kong | Easter Monday |
| 2031-04-14 | Honduras | DÃa de las Américas |
| 2031-04-14 | Croatia | Easter Monday |
| 2031-04-14 | Hungary | Easter Monday |
| 2031-04-14 | Ireland | Easter Monday |
| 2031-04-14 | Isle of Man | Easter Monday |
| 2031-04-14 | Iceland | Easter Monday |
| 2031-04-14 | Italia | Easter Monday |
| 2031-04-14 | Jersey | Easter Monday |
| 2031-04-14 | Jamaica | Easter Monday |
| 2031-04-14 | Kenya | Easter Monday |
| 2031-04-14 | St. Kitts & Nevis | Easter Monday |
| 2031-04-14 | Cayman Islands | Easter Monday |
| 2031-04-14 | St. Lucia | Easter Monday |
| 2031-04-14 | Lichtenstein | Easter Monday |
| 2031-04-14 | Lesotho | Easter Monday |
| 2031-04-14 | Lithuania | Easter Monday |
| 2031-04-14 |  Luxembourg | Easter Monday |
| 2031-04-14 | Latvia | Easter Monday |
| 2031-04-14 |  Monaco | Easter Monday |
| 2031-04-14 | Moldova | Easter Monday |
| 2031-04-14 | Montenegro | Easter Sunday |
| 2031-04-14 |  St. Martin | Easter Monday |
| 2031-04-14 | Madagascar | Easter Monday |
| 2031-04-14 | Macedonia | Orthodox Easter Monday |
| 2031-04-14 | Republic of Mali | Easter Monday |
| 2031-04-14 | Martinique | Easter Monday |
| 2031-04-14 | Montserrat | Easter Monday |
| 2031-04-14 | Malawi | Easter Monday |
| 2031-04-14 | Namibia | Easter Monday |
| 2031-04-14 |  New Caledonia | Easter Monday |
| 2031-04-14 | Republic of the Niger | Easter Monday |
| 2031-04-14 | Nigeria | Easter Monday |
| 2031-04-14 | Netherlands | Easter Monday |
| 2031-04-14 | Norway | Easter Monday |
| 2031-04-14 | New Zealand | Easter Monday |
| 2031-04-14 | Poland | Easter Monday |
| 2031-04-14 |  St. Pierre & Miquelon | Easter Monday |
| 2031-04-14 |  Réunion | Easter Monday |
| 2031-04-14 | Romania | Easter Monday |
| 2031-04-14 | Serbia | Orthodox Easter Monday |
| 2031-04-14 | Rwanda | Easter Monday |
| 2031-04-14 | Seychelles | Easter Monday |
| 2031-04-14 | Sweden | Easter Monday |
| 2031-04-14 | St. Helena | Easter Monday |
| 2031-04-14 | Slovenia | Easter Monday |
| 2031-04-14 | Svalbard & Jan Mayen | Easter Monday |
| 2031-04-14 | Slovakia | Easter Monday |
| 2031-04-14 | Sierra Leone | Easter Monday |
| 2031-04-14 | San Marino | Easter Monday |
| 2031-04-14 | Senegal | Easter Monday |
| 2031-04-14 | Suriname | Easter Monday |
| 2031-04-14 | Sint Maarten | Easter Monday |
| 2031-04-14 | Swaziland | Easter Monday |
| 2031-04-14 | Turks & Caicos Islands | Easter Monday |
| 2031-04-14 | Chad | Easter Monday |
| 2031-04-14 | Togolese Republic | Easter Monday |
| 2031-04-14 | Thailand | Songkran Festival |
| 2031-04-14 | Tonga | Easter Monday |
| 2031-04-14 | Tanzania | Easter Monday |
| 2031-04-14 | Ukraine | Orthodox Easter |
| 2031-04-14 | Uganda | Easter Monday |
| 2031-04-14 |  Vatican City | Easter Monday |
| 2031-04-14 | St. Vincent & Grenadines | Easter Monday |
| 2031-04-14 | British Virgin Islands | Easter Monday |
| 2031-04-14 | U.S. Virgin Islands | Easter Monday |
| 2031-04-14 | Vanuatu | Easter Monday |
| 2031-04-14 |  Mayotte | Easter Monday |
| 2031-04-14 | South Africa | Family Day |
| 2031-04-14 | Zambia | Easter Monday |
| 2031-04-14 | Zimbabwe | Easter Monday |
| 2031-04-14 |  Cambodia | Khmer New Year's Day |
| 2031-04-14 |  Laos | Lao New Year's Day |
| 2031-04-14 | Papua New Guinea | Easter Monday |
| 2031-04-14 | Israel | Mimouna, Seventh day of Passover |
| 2031-04-15 | Bolivia | Tarija Day |
| 2031-04-15 | Malaysia | Declaration of Malacca City as Historical City |
| 2031-04-15 | New Zealand | Provincial anniversary day |
| 2031-04-15 | Thailand | Songkran Festival |
| 2031-04-15 | Cambodia | Khmer New Year's Day |
| 2031-04-15 | Laos | Lao New Year's Day |
| 2031-04-16 |  Puerto Rico | Birthday of José de Diego |
| 2031-04-16 | United States of America | Emancipation Day |
| 2031-04-16 | Cambodia | Khmer New Year's Day |
| 2031-04-16 | Laos | Lao New Year's Day |
| 2031-04-17 |  American Samoa | American Samoa Flag Day |
| 2031-04-17 | Gabon | Women's Day |
| 2031-04-18 | Zimbabwe | Independence Day |
| 2031-04-19 | Swaziland | Birthday of King Mswati III |
| 2031-04-19 | Venezuela | Declaration of Independence |
| 2031-04-21 | Brazil | Tiradentes' Day |
| 2031-04-21 | Brazil | Fundação de BrasÃlia (DF) |
| 2031-04-21 | Brazil | Data magna do estado (MG) |
| 2031-04-21 | Moldova | Memorial Day |
| 2031-04-21 | St. Helena | Queen's Birthday |
| 2031-04-21 | Swaziland | Birthday of King Mswati III (substitute day) |
| 2031-04-21 | United States of America | Patriots' Day (MA) |
| 2031-04-22 |  Belarus | Commemoration Day |
| 2031-04-23 | Brazil | Dia de São Jorge |
| 2031-04-23 | Spain | DÃa de Aragón (AR) |
| 2031-04-23 | Spain | Fiesta de Castilla y León (CL) |
| 2031-04-23 | Turkey | National Sovereignty and Children's Day |
| 2031-04-23 | Vatican City | Saint George - Name day of the Holy Father |
| 2031-04-23 | Jordan | Islamic New Year (estimated) |
| 2031-04-23 | Kuwait | Islamic New Year (estimated) |
| 2031-04-23 | United Arab Emirates | Islamic New Year |
| 2031-04-23 | Bosnia and Herzegovina | Islamic New Year |
| 2031-04-23 | Bahrain | Islamic New Year |
| 2031-04-23 | Brunei | Islamic New Year |
| 2031-04-23 | Cocos (Keeling) Islands | Islamic New Year |
| 2031-04-23 | Djibouti | Islamic New Year |
| 2031-04-23 | Algeria | Islamic New Year |
| 2031-04-23 | Egypt | Islamic New Year |
| 2031-04-23 | Western Sahara | Islamic New Year |
| 2031-04-23 | Indonesia | Islamic New Year |
| 2031-04-23 | Comoros | Islamic New Year |
| 2031-04-23 | Libya | Islamic New Year |
| 2031-04-23 | Kingdom of Morocco | Islamic New Year |
| 2031-04-23 | Mauritania | Islamic New Year |
| 2031-04-23 | Malaysia | Islamic New Year |
| 2031-04-23 | Republic of the Niger | Islamic New Year |
| 2031-04-23 | Nigeria | Islamic New Year |
| 2031-04-23 | Sudan | Islamic New Year |
| 2031-04-23 | Somalia | Islamic New Year |
| 2031-04-23 | Tunisia | Islamic New Year |
| 2031-04-24 |  Armenia | Mother's Day |
| 2031-04-24 | Faroe Islands | Flag Day |
| 2031-04-24 | Iceland | First Day of Summer |
| 2031-04-24 | Republic of the Niger | Concord Day |
| 2031-04-25 | Australia | Anzac Day |
| 2031-04-25 | Cocos (Keeling) Islands | Anzac Day |
| 2031-04-25 | Cook Islands | Anzac Day |
| 2031-04-25 | Christmas Island | Anzac Day |
| 2031-04-25 | Egypt | Sinai Liberation Day |
| 2031-04-25 | Italia | Liberation Day |
| 2031-04-25 | New Zealand | ANZAC Day |
| 2031-04-25 | Portugal | Liberty Day |
| 2031-04-25 | Swaziland | National Flag Day |
| 2031-04-25 | Tonga | ANZAC Day |
| 2031-04-25 | United States of America | Arbor Day |
| 2031-04-26 | Malaysia | Sultan of Terengganu's Birthday |
| 2031-04-26 | Netherlands | King's Day |
| 2031-04-26 | Tanzania | Union Day |
| 2031-04-27 | Aruba | Kings Day |
| 2031-04-27 | Caribbean Netherlands | Kings Day |
| 2031-04-27 | Curaçao | Kings Day |
| 2031-04-27 | France | Abolition of Slavery |
| 2031-04-27 | Slovenia | Day of Uprising Against Occupation |
| 2031-04-27 | Sierra Leone | Independence Day |
| 2031-04-27 | Sint Maarten | King's Day |
| 2031-04-27 | Togolese Republic | Independence Day |
| 2031-04-27 | Mayotte | Abolition of Slavery |
| 2031-04-27 | South Africa | Freedom Day |
| 2031-04-28 | Barbados | National Heroes Day |
| 2031-04-28 | Gibraltar | Workers Memorial Day |
| 2031-04-28 | Sierra Leone | Independence Day (substitute day) |
| 2031-04-28 | United States of America | Confederate Memorial Day (MS) |
| 2031-04-28 | United States of America | State Holiday (GA) |
| 2031-04-28 | South Africa | Public Holiday |
| 2031-04-29 |  Japan | Showa Day |
| 2031-04-29 | Israel | Independence Day (Yom HaAtzmaut) |
| 2031-04-30 | Caribbean Netherlands | Rincon Day |
| 2031-04-30 | Sint Maarten | Carnival |
| 2031-04-30 | Vietnam | Day of liberating the South for national reunification |
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