September 1, 2027
Eritrea- Revolution Day
Slovakia- Constitution Day
Uzbekistan- Independence Day
September 3, 2027
San Marino- The Feast of San Marino and the Republic
September 5, 2027
Brazil- Dia da Amazônia (AC)
- Elevação do Amazonas à categoria de provÃncia (AM)
September 6, 2027
American Samoa- Labour Day
Bulgaria- Unification Day
Bermuda- Labour Day
Caribbean Netherlands- Bonaire Day
Canada- Labour Day
Guam- Labour Day
Puerto Rico- Labour Day
São Tomé & PrÃncipe- Armed Forces Day
Swaziland- Umhlanga Reed Dance
- Independence Day
United States of America- Labour Day
U.S. Virgin Islands- Labour Day
September 7, 2027
- Brazil
- Independence Day
Spain- La Bajada de la Virgen del Socorro
Fiji- Constitution Day
Canary Islands- La Bajada de la Virgen del Socorro
Mozambique- Lusaka Peace Agreement
September 8, 2027
Andorra- Our Lady of Meritxell
- Brazil
- Nossa Senhora da Luz dos Pinhais (PR)
- Nossa Senhora da Natividade (TO)
- Spain
- DÃa de Asturias (AS)
- Nuestra Señora del Pino (CN)
- DÃa de Extremadura (EX)
- Canary Islands
- Nuestra Señora del Pino
Lichtenstein- Mariä Geburt
Macedonia- Independence Day
Malta- Victory Day
Vatican City- Nativity of Mary
September 9, 2027
Switzerland- Jeûne Genevois
September 12, 2027
Cape Verde- National Day
September 13, 2027
- Brazil
- Criação do Território Federal
September 14, 2027
Bolivia- Cochabamba Day
Nicaragua- Battle of San Jacinto
- United States of America
- Primary Election Day
Venezuela- DÃa de Barquisimeto
September 15, 2027
China- Mid-Autumn Festival
Costa Rica- Independence Day
- Spain
- La Bien Aparecida (CB)
- Nuestra Señora de los Dolores (CN)
Guatemala- Independence Day
Honduras- Independence Day
- Canary Islands
- Nuestra Señora de los Dolores
South Korea- Korean Thanksgiving
- Nicaragua
- Independence Day
- Slovakia
- Day of Our Lady of the Seven Sorrows
El Salvador- Independence Day
Taiwan- Mid-Autumn Festival
September 16, 2027
- Brazil
- Emancipação polÃtica
Hong Kong- The day following the Chinese Mid-Autumn Festival
St. Kitts & Nevis- National Heroes' Day
Libya- Martyrs' Day
Mexico- Independence Day
Malaysia- Malaysia Day
Papua New Guinea- Independence Day
September 18, 2027
Chile- National holiday
- Spain
- Nuestra Señora de la Peña
- Canary Islands
- Nuestra Señora de la Peña
September 19, 2027
- Switzerland
- Federal Day of Thanksgiving, Repentance and Prayer
- Chile
- Army Day
September 20, 2027
- Brazil
- Proclamação da República Rio-Grandense
Germany- International Children's Day
Japan- Respect-for-the-Aged Day
- St. Kitts & Nevis
- Independence Day
Tonga- Birthday of His Royal Highness The Crown Prince Tupotoʻa-ʻUlukalala
September 22, 2027
- Bulgaria
- Independence Day
- Switzerland
- Mauritiustag
Republic of Mali- Independence Day
September 23, 2027
- Japan
- Autumnal Equinox Day
Saudi Arabia- National Day Holiday
- Papua New Guinea
- September Equinox
September 24, 2027
Austria- Rupert
Australia- AFL Grand Final Friday
- Bolivia
- Pando Day (N)
- Santa Cruz Day (S)
Dominican Republic- Our Lady of las Mercedes
- Spain
- Nuestra Señora de los Reyes (CN)
- Mare de Déu de la Mercè (CT)
Guinea-Bissau- Independence Day
- Canary Islands
- Nuestra Señora de los Reyes
New Caledonia- New Caledonia Day
Turks & Caicos Islands- National Youth Day
Trinidad & Tobago- Republic Day
South Africa- Heritage Day
Cambodia- Constitution Day
September 25, 2027
- Switzerland
- Saint Nicholas of Flüe
- Mozambique
- Defense Force’s Day
September 28, 2027
Czech Republic- St. Wenceslas Day (Czech Statehood Day)
September 30, 2027
Botswana- Botswana Day
- Canada
- National Day for Truth and Reconciliation
- São Tomé & PrÃncipe
- Agricultural Reform Day
- Cambodia
- Pchum Ben Day
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