May 23 | Tuesday | Labor Day / May Day | Jamaica |
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| Independence Day observed | Montenegro |
| Vlach’s National Day (for Vlach community) | North Macedonia |
| Portalegre Day | Portugal |
May 24 | Wednesday | Culture and Literacy Day | Bulgaria |
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| The Battle of Pichincha | Ecuador |
| Independence Day | Eritrea |
| Saints Cyril and Methodius' Day | North Macedonia |
May 25 | Thursday | National Day/May 1810 Revolution | Argentina |
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| African Union Day | Ghana, Gambia, Guinea, Lesotho, Mali, Mauritania, Namibia, Zambia, Zimbabwe |
| Shavuot Eve | Israel |
| Independence Day | Jordan |
| Liberation and Resistance Day | Lebanon |
| Orthodox Ascension Day | Romania |
| Ashgabat City Day | Turkmenistan |
May 26 | Friday | Bridge Public Holiday | Argentina |
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| Shavuot | Australia, Canada, Germany, Israel, United Kingdom, United States |
| Bermuda Day | Bermuda |
| Day off for The Battle of Pichincha | Ecuador |
| Independence Day | Georgia, Guyana |
| Buddha's Birthday | Hong Kong, Macau |
| Mother's Day | Poland |
May 27 | Saturday | Mother's Day | Bolivia |
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| Second Day of Shavuot | Germany |
| Abolition Day | Guadeloupe |
| Buddha’s Birthday | South Korea |
| Children's Day | Nigeria |
| Whit Saturday | Norway, Sweden |
May 28 | Sunday | Whit Sunday | Andorra, Austria, Australia, Barbados, Belgium, The Bahamas, Canada, Switzerland, Czechia, Germany, Denmark, Estonia, Spain, Finland, Faroe Islands, France, French Guiana, Guadeloupe, Hungary, Iceland, Liechtenstein, Luxembourg, Latvia, Monaco, Saint Martin, Madagascar, Martinique, New Caledonia, Netherlands, Norway, Poland, Sweden, Slovenia, Sint Maarten, United Kingdom, United States, Mayotte |
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| Republic Day | Armenia, Azerbaijan |
| Mother's Day | Dominican Republic, Haiti, Mauritius, Sweden, Senegal |
| Derg Downfall Day | Ethiopia |
| Dniester Day | Moldova |
| Abolition Day | Saint Martin |
| Carpet Day | Turkmenistan |
| Kyiv Day | Ukraine |
May 29 | Monday | Whit Monday | Andorra, Antigua and Barbuda, Anguilla, Austria, Australia, Barbados, Belgium, Benin, St. Barts, The Bahamas, Canada, Central African Republic, Congo, Switzerland, Cote d'Ivoire, Czechia, Germany, Denmark, Dominica, Faroe Islands, France, Gabon, Grenada, French Guiana, Greenland, Guadeloupe, Hungary, Iceland, Saint Kitts and Nevis, Saint Lucia, Liechtenstein, Luxembourg, Monaco, Saint Martin, Madagascar, Mali, Martinique, Montserrat, New Caledonia, Netherlands, Norway, French Polynesia, Saint Pierre and Miquelon, Reunion, Solomon Islands, Saint Helena, Senegal, Togo, United Kingdom, United States, Saint Vincent and the Grenadines, British Virgin Islands, Wallis and Futuna, Mayotte |
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| Memorial Day | American Samoa, Guam, Northern Mariana Islands, Puerto Rico, United States, US Virgin Islands |
| Reconciliation Day | Australia |
| Day off for Republic Day | Azerbaijan |
| Sukuna's Day Holiday | Fiji |
| Spring Bank Holiday | Guernsey, Gibraltar, Jersey, United Kingdom |
| Late May Bank Holiday | Isle of Man |
| Buddha’s Birthday Holiday | South Korea |
| Ganatantra Diwas (Republic Day) | Nepal |
| Azores Day | Portugal |
| JAGS McCartney Day | Turks and Caicos Islands |
| Internal Affairs Officers Day | Turkmenistan |
| Decoration Day | United States |
May 30 | Tuesday | Anguilla Day | Anguilla |
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| Day of the Canary Islands | Spain |
| Statehood Day | Croatia |
| Harvest Festival | Malaysia |
| Mothers' Day | Nicaragua |
| Indian Arrival Day | Trinidad and Tobago |