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Libraries Day is observed in Belarus every September 15, celebrating the contributions ...

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Engineer’s Day is observed in India every September 15 to honor Sir ...

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Independence Day is observed in Costa Rica every September 15, commemorating the ...

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National Neonatal Nurses Day is observed annually on September 15 to honor ...

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Independence Day in El Salvador is observed every September 15, commemorating the ...

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Greenpeace Day is observed worldwide every September 15 to commemorate the founding ...

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Independence Day in Guatemala is observed every September 15 to celebrate the ...

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Knowledge Day is observed in Azerbaijan every September 15 as a national ...

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Independence Day in Nicaragua is observed every September 15 and is a ...

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Silpa Bhirasri Day is observed in Thailand every September 15 to honor ...

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Prince's Day, or Prinsjesdag, is observed in the Netherlands every third Tuesday ...

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Independence Day in Honduras is observed every September 15, celebrating the country's ...

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