Which public New Year's Eve celebration in Brazil is known for people wearing white and making offerings to Iemanjá?

The Brazilian celebration known for white clothing and offerings to Iemanjá is Réveillon in Rio de Janeiro.

Réveillon is the Portuguese term commonly used for New Year's Eve celebrations in Brazil. Rio de Janeiro's event is especially associated with gatherings on Copacabana Beach, where many participants wear white as a sign of peace and renewal. The celebration also features concerts, fireworks, and religiously influenced customs.

Iemanjá, an important water deity in Afro-Brazilian religious traditions, is honored by some celebrants through offerings placed on the sea or on small boats. Flowers, candles, and other offerings may be used, although practices vary and environmental concerns have prompted calls for more responsible celebrations.

White clothing and Iemanjá offerings are customs within the broader celebration, not requirements for every attendee. Réveillon should also not be confused with Brazil's Carnival, a separate festival whose dates change each year and usually fall weeks before Lent.