| Date | Country | Holiday name |
|---|---|---|
| 1988-12-01 |  Central African Republic | Republic Day |
| 1988-12-01 |  Mexico | Change of Federal Government |
| 1988-12-01 |  Portugal | Restauração da Independência |
| 1988-12-01 |  Romania | National holiday |
| 1988-12-01 |  Chad | Freedom and Democracy Day |
| 1988-12-02 |  United Arab Emirates | National Day |
| 1988-12-02 |  Caribbean Netherlands | Saba Day |
| 1988-12-02 |  Ghana | Farmers Day |
| 1988-12-02 |  Laos | Lao National Day |
| 1988-12-05 |  Thailand | King Bhumibol Adulyadej's Birthday |
| 1988-12-05 |  Tonga | Tupou I Day |
| 1988-12-06 |  Åland Islands | Independence Day |
| 1988-12-06 |  Spain | Día de la Constitución Española |
| 1988-12-06 |  Finland | Independence Day |
| 1988-12-06 | Canary Islands | Día de la Constitución Española |
| 1988-12-07 |  Italia | Saint Ambrose |
| 1988-12-07 |  Venezuela | Día de Maturin |
| 1988-12-08 |  Andorra | Immaculate Conception |
| 1988-12-08 |  Argentina | Immaculate Conception |
| 1988-12-08 |  Austria | Immaculate Conception |
| 1988-12-08 |  Brazil | Immaculate Conception |
| 1988-12-08 |  Switzerland | Immaculate Conception |
| 1988-12-08 |  Chile | Immaculate Conception |
| 1988-12-08 |  Colombia | Immaculate Conception |
| 1988-12-08 | Spain | Immaculate Conception |
| 1988-12-08 |  Republic of Equatorial Guinea | Immaculate Conception |
| 1988-12-08 |  Guam | Our Lady of Camarin Day |
| 1988-12-08 | Canary Islands | Immaculate Conception |
| 1988-12-08 | Italia | Immaculate Conception |
| 1988-12-08 |  Lichtenstein | Immaculate Conception |
| 1988-12-08 |  Monaco | Immaculate Conception |
| 1988-12-08 |  Macedonia | Saint Clement of Ohrid Day |
| 1988-12-08 |  Malta | Immaculate Conception |
| 1988-12-08 |  Nicaragua | Immaculate Conception |
| 1988-12-08 |  Panama | Mother's Day |
| 1988-12-08 |  Peru | Immaculate Conception |
| 1988-12-08 | Portugal | Immaculate Conception |
| 1988-12-08 |  Paraguay | Virgin of Caacupe |
| 1988-12-08 |  Seychelles | Immaculate Conception |
| 1988-12-08 |  San Marino | Immaculate Conception |
| 1988-12-08 |  Vatican City | Immaculate Conception |
| 1988-12-09 |  Antigua & Barbuda | V.C Bird Day |
| 1988-12-09 | Argentina | Bridge Day |
| 1988-12-09 |  Tanzania | Independence Day |
| 1988-12-10 |  Namibia | Human Rights Day |
| 1988-12-10 | Thailand | Constitution Day |
| 1988-12-11 |  Burkina Faso | Proclamation of the Republic |
| 1988-12-11 |  Malaysia | Sultan of Selangor's Birthday |
| 1988-12-12 |  Kenya | Jamhuri Day |
| 1988-12-13 |  St. Lucia | National Day |
| 1988-12-13 | Malta | Republic Day |
| 1988-12-15 | Caribbean Netherlands | Kingdom Day |
| 1988-12-15 |  United Kingdom | Homecoming Day |
| 1988-12-16 |  People's Republic of Bangladesh | Victory Day |
| 1988-12-16 |  Bahrain | National Day |
| 1988-12-16 |  South Africa | Day of Reconciliation |
| 1988-12-17 | Bahrain | Accession Day |
| 1988-12-18 |  Republic of the Niger | Republic Day |
| 1988-12-19 |  Anguilla | National Heroes and Heroines Day |
| 1988-12-19 | Brazil | Emancipação política do estado do Paraná |
| 1988-12-19 |  Sudan | Revolution Day |
| 1988-12-20 |  France | Abolition of Slavery |
| 1988-12-20 |  Réunion | Abolition of Slavery |
| 1988-12-21 |  São Tomé & Príncipe | São Tomé Day |
| 1988-12-21 |  Papua New Guinea | December Solstice |
| 1988-12-22 |  Zimbabwe | Unity Day |
| 1988-12-23 |  United States of America | Christmas Eve (substitute day) |
| 1988-12-24 |  Bulgaria | Christmas Eve |
| 1988-12-24 | Switzerland | Christmas Eve (GL) |
| 1988-12-24 |  Czech Republic | Christmas Eve |
| 1988-12-24 |  Estonia | Christmas Eve |
| 1988-12-24 |  Faroe Islands | Christmas Eve |
| 1988-12-24 |  Greenland | Christmas Eve |
| 1988-12-24 |  Lithuania | Christmas Eve |
| 1988-12-24 |  Latvia | Christmas Eve |
| 1988-12-24 |  Libya | Independence Day |
| 1988-12-24 |  Montenegro | Christmas Eve |
| 1988-12-24 | Malaysia | Christmas Eve |
| 1988-12-24 |  Slovakia | Christmas Eve |
| 1988-12-24 | United States of America | Washington's Birthday |
| 1988-12-24 | Venezuela | Christmas Eve |
| 1988-12-24 | Switzerland | Christmas Eve (VS) |
| 1988-12-24 |  Guatemala | Christmas Eve |
| 1988-12-24 |  Iceland | Christmas Eve |
| 1988-12-24 |  Australia | Christmas Eve (QLD) |
| 1988-12-24 | Australia | Christmas Eve (SA) |
| 1988-12-25 | Andorra | Christmas Day |
| 1988-12-25 | Antigua & Barbuda | Christmas Day |
| 1988-12-25 | Anguilla | Christmas Day |
| 1988-12-25 |  Albania | Christmas Day |
| 1988-12-25 |  Angola | Christmas Day |
| 1988-12-25 | Argentina | Christmas Day |
| 1988-12-25 |  American Samoa | Christmas Day |
| 1988-12-25 | Austria | Christmas Day |
| 1988-12-25 | Australia | Christmas Day |
| 1988-12-25 |  Aruba | Christmas Day |
| 1988-12-25 | Åland Islands | Christmas Day |
| 1988-12-25 |  Bosnia and Herzegovina | Christmas Day |
| 1988-12-25 |  Barbados | Christmas Day |
| 1988-12-25 | People's Republic of Bangladesh | Christmas Day |
| 1988-12-25 |  Belgium | Christmas Day |
| 1988-12-25 | Burkina Faso | Christmas Day |
| 1988-12-25 | Bulgaria | Christmas Day |
| 1988-12-25 |  Burundi | Christmas Day |
| 1988-12-25 |  Benin | Christmas Day |
| 1988-12-25 |  St. Barths | Christmas Day |
| 1988-12-25 |  Bermuda | Christmas Day |
| 1988-12-25 |  Brunei | Christmas Day |
| 1988-12-25 |  Bolivia | Christmas Day |
| 1988-12-25 | Caribbean Netherlands | Christmas Day |
| 1988-12-25 | Brazil | Christmas Day |
| 1988-12-25 |  Bahamas | Christmas Day |
| 1988-12-25 |  Botswana | Christmas Day |
| 1988-12-25 |  Belarus | Christmas Day |
| 1988-12-25 |  Belize | Christmas Day |
| 1988-12-25 |  Canada | Christmas Day |
| 1988-12-25 |  Cocos (Keeling) Islands | Christmas Day |
| 1988-12-25 |  Democratic Republic of the Congo | Christmas Day |
| 1988-12-25 | Central African Republic | Christmas Day |
| 1988-12-25 |  Republic of the Congo | Christmas Day |
| 1988-12-25 | Switzerland | Christmas Day |
| 1988-12-25 |  Republic of Côte d'Ivoire | Christmas Day |
| 1988-12-25 |  Cook Islands | Christmas Day |
| 1988-12-25 | Chile | Christmas Day |
| 1988-12-25 |  Cameroon | Christmas Day |
| 1988-12-25 | Colombia | Christmas Day |
| 1988-12-25 |  Costa Rica | Christmas Day |
| 1988-12-25 |  Cuba | Christmas Day |
| 1988-12-25 |  Cape Verde | Christmas Day |
| 1988-12-25 |  Curaçao | Christmas Day |
| 1988-12-25 |  Christmas Island | Christmas Day |
| 1988-12-25 |  Cyprus | Christmas Day |
| 1988-12-25 | Czech Republic | Christmas Day |
| 1988-12-25 |  Germany | Christmas Day |
| 1988-12-25 |  Djibouti | Christmas Day |
| 1988-12-25 |  Denmark | Christmas Day |
| 1988-12-25 |  Dominica | Christmas Day |
| 1988-12-25 |  Dominican Republic | Christmas Day |
| 1988-12-25 |  Ecuador | Christmas Day |
| 1988-12-25 | Estonia | Christmas Day |
| 1988-12-25 |  Eritrea | Christmas Day |
| 1988-12-25 | Spain | Christmas Day |
| 1988-12-25 | Finland | Christmas Day |
| 1988-12-25 | Faroe Islands | Christmas Day |
| 1988-12-25 | France | Christmas Day |
| 1988-12-25 |  Gabon | Christmas Day |
| 1988-12-25 | United Kingdom | Christmas Day |
| 1988-12-25 |  Grenada | Christmas Day |
| 1988-12-25 |  French Guiana | Christmas Day |
| 1988-12-25 |  Guernsey | Christmas Day |
| 1988-12-25 | Ghana | Christmas Day |
| 1988-12-25 |  Gibraltar | Christmas Day |
| 1988-12-25 | Greenland | Christmas Day |
| 1988-12-25 |  The Gambia | Christmas Day |
| 1988-12-25 |  Guinea | Christmas Day |
| 1988-12-25 |  Guadeloupe | Christmas Day |
| 1988-12-25 | Republic of Equatorial Guinea | Christmas Day |
| 1988-12-25 |  Greece | Christmas Day |
| 1988-12-25 | Guatemala | Christmas Day |
| 1988-12-25 | Guam | Christmas Day |
| 1988-12-25 |  Guinea-Bissau | Christmas Day |
| 1988-12-25 |  Guyana | Christmas Day |
| 1988-12-25 |  Hong Kong | Christmas Day |
| 1988-12-25 |  Honduras | Christmas Day |
| 1988-12-25 |  Croatia | Christmas Day |
| 1988-12-25 |  Haiti | Christmas Day |
| 1988-12-25 |  Hungary | Christmas Day |
| 1988-12-25 | Canary Islands | Christmas Day |
| 1988-12-25 |  Indonesia | Christmas Day |
| 1988-12-25 |  Ireland | Christmas Day |
| 1988-12-25 |  Isle of Man | Christmas Day |
| 1988-12-25 | Iceland | Christmas Day |
| 1988-12-25 | Italia | Christmas Day |
| 1988-12-25 |  Jersey | Christmas Day |
| 1988-12-25 |  Jamaica | Christmas Day |
| 1988-12-25 | Kenya | Christmas Day |
| 1988-12-25 |  St. Kitts & Nevis | Christmas Day |
| 1988-12-25 |  South Korea | Christmas Day |
| 1988-12-25 |  Cayman Islands | Christmas Day |
| 1988-12-25 | St. Lucia | Christmas Day |
| 1988-12-25 | Lichtenstein | Christmas Day |
| 1988-12-25 |  Liberia | Christmas Day |
| 1988-12-25 |  Lesotho | Christmas Day |
| 1988-12-25 | Lithuania | Christmas Day |
| 1988-12-25 |  Luxembourg | Christmas Day |
| 1988-12-25 | Latvia | Christmas Day |
| 1988-12-25 | Monaco | Christmas Day |
| 1988-12-25 |  Moldova | Christmas Day |
| 1988-12-25 | Montenegro | Christmas Day |
| 1988-12-25 |  St. Martin | Christmas Day |
| 1988-12-25 |  Madagascar | Christmas Day |
| 1988-12-25 |  Republic of Mali | Christmas Day |
| 1988-12-25 |  Martinique | Christmas Day |
| 1988-12-25 |  Montserrat | Christmas Day |
| 1988-12-25 | Malta | Christmas Day |
| 1988-12-25 |  Malawi | Christmas Day |
| 1988-12-25 | Mexico | Christmas Day |
| 1988-12-25 | Malaysia | Christmas Day |
| 1988-12-25 |  Mozambique | Family Day |
| 1988-12-25 | Namibia | Christmas Day |
| 1988-12-25 |  New Caledonia | Christmas Day |
| 1988-12-25 | Republic of the Niger | Christmas Day |
| 1988-12-25 |  Nigeria | Christmas Day |
| 1988-12-25 | Nicaragua | Christmas Day |
| 1988-12-25 |  Netherlands | Christmas Day |
| 1988-12-25 |  Norway | Christmas Day |
| 1988-12-25 |  New Zealand | Christmas Day |
| 1988-12-25 | Panama | Christmas Day |
| 1988-12-25 | Peru | Christmas Day |
| 1988-12-25 |  Philippines | Christmas Day |
| 1988-12-25 |  Poland | Christmas Day |
| 1988-12-25 |  St. Pierre & Miquelon | Christmas Day |
| 1988-12-25 |  Puerto Rico | Christmas Day |
| 1988-12-25 | Portugal | Christmas Day |
| 1988-12-25 | Paraguay | Christmas Day |
| 1988-12-25 | Réunion | Christmas Day |
| 1988-12-25 | Romania | Christmas Day |
| 1988-12-25 |  Rwanda | Christmas Day |
| 1988-12-25 | Seychelles | Christmas Day |
| 1988-12-25 | Sudan | Christmas Day |
| 1988-12-25 |  Sweden | Christmas Day |
| 1988-12-25 |  Singapore | Christmas Day |
| 1988-12-25 |  St. Helena | Christmas Day |
| 1988-12-25 |  Svalbard & Jan Mayen | Christmas Day |
| 1988-12-25 | Slovakia | Christmas Day |
| 1988-12-25 |  Sierra Leone | Christmas Day |
| 1988-12-25 | San Marino | Christmas Day |
| 1988-12-25 |  Senegal | Christmas Day |
| 1988-12-25 |  Suriname | Christmas Day |
| 1988-12-25 |  South Sudan | Christmas Day |
| 1988-12-25 | São Tomé & Príncipe | Christmas Day |
| 1988-12-25 |  El Salvador | Christmas Day |
| 1988-12-25 |  Sint Maarten | Christmas Day |
| 1988-12-25 |  Swaziland | Christmas Day |
| 1988-12-25 |  Turks & Caicos Islands | Christmas Day |
| 1988-12-25 | Chad | Christmas Day |
| 1988-12-25 |  Togolese Republic | Christmas Day |
| 1988-12-25 | Tonga | Christmas Day |
| 1988-12-25 |  Trinidad & Tobago | Christmas Day |
| 1988-12-25 | Tanzania | Christmas Day |
| 1988-12-25 |  Uganda | Christmas Day |
| 1988-12-25 | United States of America | Christmas Day |
| 1988-12-25 |  Uruguay | Christmas Day |
| 1988-12-25 | Vatican City | Christmas Day |
| 1988-12-25 |  St. Vincent & Grenadines | Christmas Day |
| 1988-12-25 | Venezuela | Christmas Day |
| 1988-12-25 |  British Virgin Islands | Christmas Day |
| 1988-12-25 |  U.S. Virgin Islands | Christmas Day |
| 1988-12-25 |  Vanuatu | Christmas Day |
| 1988-12-25 |  Kosovo | Christmas Day |
| 1988-12-25 |  Mayotte | Christmas Day |
| 1988-12-25 | South Africa | Christmas Day |
| 1988-12-25 |  Zambia | Christmas Day |
| 1988-12-25 | Zimbabwe | Christmas Day |
| 1988-12-25 |  Jordan | Christmas Day |
| 1988-12-25 | Papua New Guinea | Christmas Day |
| 1988-12-26 | Andorra | Boxing Day |
| 1988-12-26 | Antigua & Barbuda | Boxing Day |
| 1988-12-26 | Anguilla | Boxing Day |
| 1988-12-26 | Albania | Christmas Day (substitute day) |
| 1988-12-26 | American Samoa | Christmas Day (substitute day) |
| 1988-12-26 | Austria | Boxing Day |
| 1988-12-26 | Australia | Boxing Day |
| 1988-12-26 | Australia | Proclamation Day (SA) |
| 1988-12-26 | Aruba | Boxing Day |
| 1988-12-26 | Åland Islands | Boxing Day |
| 1988-12-26 | Bosnia and Herzegovina | Boxing Day |
| 1988-12-26 | Barbados | Boxing Day |
| 1988-12-26 | Bermuda | Boxing Day |
| 1988-12-26 | Bolivia | Christmas Day (substitutes) |
| 1988-12-26 | Caribbean Netherlands | Boxing Day |
| 1988-12-26 | Bahamas | Boxing Day |
| 1988-12-26 | Botswana | Family Day |
| 1988-12-26 | Belize | Boxing Day |
| 1988-12-26 | Canada | Boxing Day |
| 1988-12-26 | Cocos (Keeling) Islands | Boxing Day |
| 1988-12-26 | Democratic Republic of the Congo | Christmas Day (substitute day) |
| 1988-12-26 | Cook Islands | Christmas Day (substitute day) |
| 1988-12-26 | Cook Islands | Boxing Day |
| 1988-12-26 | Curaçao | Boxing Day |
| 1988-12-26 | Christmas Island | Boxing Day |
| 1988-12-26 | Cyprus | Boxing Day |
| 1988-12-26 | Czech Republic | Boxing Day |
| 1988-12-26 | Germany | Boxing Day |
| 1988-12-26 | Denmark | Boxing Day |
| 1988-12-26 | Dominica | Boxing Day |
| 1988-12-26 | Estonia | Boxing Day |
| 1988-12-26 | Spain | Christmas Day (substitute day) |
| 1988-12-26 | Finland | Boxing Day |
| 1988-12-26 |  Fiji | Christmas Day |
| 1988-12-26 | Faroe Islands | Boxing Day |
| 1988-12-26 | France | Boxing Day |
| 1988-12-26 | United Kingdom | Boxing Day |
| 1988-12-26 | Grenada | Boxing Day |
| 1988-12-26 | Guernsey | Boxing Day |
| 1988-12-26 | Ghana | Boxing Day |
| 1988-12-26 | Gibraltar | Boxing Day |
| 1988-12-26 | Greenland | Boxing Day |
| 1988-12-26 | Republic of Equatorial Guinea | Christmas Day (substitute day) |
| 1988-12-26 | Greece | Boxing Day |
| 1988-12-26 | Guam | Christmas Day (substitute day) |
| 1988-12-26 | Guyana | Boxing Day |
| 1988-12-26 | Hong Kong | Christmas Day (substitute day) |
| 1988-12-26 | Hong Kong | The first weekday after Christmas Day |
| 1988-12-26 | Croatia | Boxing Day |
| 1988-12-26 | Hungary | Boxing Day |
| 1988-12-26 | Canary Islands | Christmas Day (substitute day) |
| 1988-12-26 | Ireland | St. Stephen's Day |
| 1988-12-26 | Isle of Man | Boxing Day |
| 1988-12-26 | Iceland | Boxing Day |
| 1988-12-26 | Italia | Boxing Day |
| 1988-12-26 | Jersey | Boxing Day |
| 1988-12-26 | Jamaica | Boxing Day |
| 1988-12-26 | Kenya | Boxing Day |
| 1988-12-26 | St. Kitts & Nevis | Boxing Day |
| 1988-12-26 | Cayman Islands | Boxing Day |
| 1988-12-26 | St. Lucia | Boxing Day |
| 1988-12-26 | Lichtenstein | Boxing Day |
| 1988-12-26 | Lesotho | Boxing Day |
| 1988-12-26 | Lithuania | Boxing Day |
| 1988-12-26 | Luxembourg | Boxing Day |
| 1988-12-26 | Latvia | Boxing Day |
| 1988-12-26 | Monaco | Christmas Day (substitute day) |
| 1988-12-26 | Montenegro | Christmas Day |
| 1988-12-26 | Montserrat | Boxing Day |
| 1988-12-26 | Malawi | Christmas Day (substitute day) |
| 1988-12-26 | Malaysia | Christmas Day (substitute day) |
| 1988-12-26 | Mozambique | Public Holiday |
| 1988-12-26 | Namibia | Day of Goodwill |
| 1988-12-26 | Nigeria | Boxing Day |
| 1988-12-26 | Netherlands | Boxing Day |
| 1988-12-26 | Norway | Boxing Day |
| 1988-12-26 | New Zealand | Boxing Day |
| 1988-12-26 | Panama | Christmas Day (substitute day) |
| 1988-12-26 | Poland | Boxing Day |
| 1988-12-26 | Puerto Rico | Christmas Day (substitute day) |
| 1988-12-26 | Romania | Boxing Day |
| 1988-12-26 | Rwanda | Boxing Day |
| 1988-12-26 | Sweden | Boxing Day |
| 1988-12-26 | Singapore | Christmas Day (substitute day) |
| 1988-12-26 | St. Helena | Boxing Day |
| 1988-12-26 |  Slovenia | Independence and Unity Day |
| 1988-12-26 | Svalbard & Jan Mayen | Boxing Day |
| 1988-12-26 | Slovakia | Boxing Day |
| 1988-12-26 | Sierra Leone | Boxing Day |
| 1988-12-26 | San Marino | Boxing Day |
| 1988-12-26 | Suriname | Boxing Day |
| 1988-12-26 | São Tomé & Príncipe | Christmas Day (substitute day) |
| 1988-12-26 | Sint Maarten | Boxing Day |
| 1988-12-26 | Swaziland | Boxing Day |
| 1988-12-26 | Turks & Caicos Islands | Boxing Day |
| 1988-12-26 | Tonga | Boxing Day |
| 1988-12-26 | Trinidad & Tobago | Boxing Day |
| 1988-12-26 | Tanzania | Christmas Day |
| 1988-12-26 | Uganda | Boxing Day |
| 1988-12-26 | United States of America | Christmas Day (substitute day) |
| 1988-12-26 | United States of America | Boxing Day (SC) |
| 1988-12-26 | United States of America | Day after Christmas (TX) |
| 1988-12-26 | Vatican City | Boxing Day |
| 1988-12-26 | St. Vincent & Grenadines | Boxing Day |
| 1988-12-26 | British Virgin Islands | Boxing Day |
| 1988-12-26 | U.S. Virgin Islands | Christmas Day (substitute day) |
| 1988-12-26 | Vanuatu | Fête de Famille |
| 1988-12-26 | South Africa | Day of Goodwill |
| 1988-12-26 | Zambia | Christmas Day (substitute day) |
| 1988-12-26 | Zimbabwe | Boxing Day |
| 1988-12-26 | Papua New Guinea | Boxing Day |
| 1988-12-27 | Antigua & Barbuda | Christmas Day (substitute day) |
| 1988-12-27 | Anguilla | Christmas Day (substitute day) |
| 1988-12-27 | Australia | Christmas Day (substitute day) |
| 1988-12-27 | Australia | Christmas Day |
| 1988-12-27 | Barbados | Public Holiday |
| 1988-12-27 | Botswana | Public Holiday |
| 1988-12-27 | Belize | Christmas Day (substitute day) |
| 1988-12-27 | Cocos (Keeling) Islands | Christmas Day (substitute day) |
| 1988-12-27 | Cook Islands | Boxing Day (substitute day) |
| 1988-12-27 | Dominica | Christmas Day (substitute day) |
| 1988-12-27 | Fiji | Boxing Day |
| 1988-12-27 | United Kingdom | Christmas Day (substitute day) |
| 1988-12-27 | Guernsey | Christmas Day (substitute day) |
| 1988-12-27 | Ghana | Christmas Day (substitute day) |
| 1988-12-27 | Gibraltar | Christmas Day (substitute day) |
| 1988-12-27 | Hong Kong | The first weekday after Christmas Day (substitute day) |
| 1988-12-27 | Isle of Man | Christmas Day (substitute day) |
| 1988-12-27 | Jersey | Christmas Day (substitute day) |
| 1988-12-27 | Jamaica | Christmas Day (substitute day) |
| 1988-12-27 | Kenya | Christmas Day (substitute day) |
| 1988-12-27 | Montserrat | Christmas Day (substitute day) |
| 1988-12-27 | New Zealand | Christmas Day (substitute day) |
| 1988-12-27 | St. Helena | Christmas Day (substitute day) |
| 1988-12-27 | Sierra Leone | Christmas Day (substitute day) |
| 1988-12-27 | Turks & Caicos Islands | Christmas Day (substitute day) |
| 1988-12-27 | Trinidad & Tobago | Christmas Day (substitute day) |
| 1988-12-27 | St. Vincent & Grenadines | Christmas Day (substitute day) |
| 1988-12-27 | British Virgin Islands | Christmas Day (substitute day) |
| 1988-12-27 | Vanuatu | Public Holiday |
| 1988-12-27 | Papua New Guinea | Day off for Christmas Day |
| 1988-12-28 | South Sudan | Republic Day |
| 1988-12-28 | Swaziland | Incwala Festival |
| 1988-12-30 | Philippines | Rizal Day |
| 1988-12-31 |  Armenia | New Year's Eve |
| 1988-12-31 |  Azerbaijan | International Solidarity Day of Azerbaijanis |
| 1988-12-31 | Switzerland | New Year's Eve (GL) |
| 1988-12-31 | Switzerland | Restoration of the Republic (GE) |
| 1988-12-31 | Latvia | New Year's Eve |
| 1988-12-31 | Montserrat | Festival Day |
| 1988-12-31 | South Sudan | New Year's Eve |
| 1988-12-31 | Thailand | New Year's Eve |
| 1988-12-31 | Venezuela | New Year's Eve |
| 1988-12-31 | Curaçao | New Year's Eve |
| 1988-12-31 | Faroe Islands | New Year's Eve |
| 1988-12-31 | Guatemala | New Year's Eve |
| 1988-12-31 | Iceland | New Year's Eve |
| 1988-12-31 | Australia | New Year's Eve |
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