Republic Day in Brazil is observed every November 15 as a public holiday celebrating the anniversary of the proclamation of the Brazilian Republic in 1889. This day marks the overthrow of Emperor Dom Pedro II, which led to the establishment of the Federative Republic of Brazil. The military officers who organized the coup declared the new republic, and Marshal Deodoro da Fonseca became the first President. On Republic Day, Brazilians participate in various festivities, including parades and concerts held in the streets, while the national flag is raised throughout the country. The day serves as a reminder of Brazil's transition from an empire to a republic and the significant historical events that shaped the nation.