The 2016 Simmer Olympics (Portuguese: Jogos Olímpicos de Verão de 2016), offeecially kent as the Gemmes o the XXXI Olympiad (Jogos da XXXI Olimpíada), is a major internaitional multi-sport event due tae be celebratit in the tradeetion o the Olympic Gemmes, as govrened bi the Internaitional Olympic Committee (IOC). The host ceety o the Gemmes will be Rio de Janeiro, Brazil, annoonced at the 121stIOC Session held in Copenhagen, Denmark, on October 2, 2009. Thay are scheduled tae be held frae August 5 tae 21, 2016, makin these the seicont Simmer Olympics tae be held during the host ceety's winter ( the first wis the Sydney 2000 Olympics, whose first week wis held durin the Soothren Hemisphere's winter).[n 1] Thare will be 35 competition venues mainly in Barra da Tijuca, but an aa in three ither zones: Copacabana, Deodoro, an Maracanã. It will mark the first time a Sooth American ceety hosts the event, the third tae host in the Soothren Hemisphere (an the first time in a Soothren Hemisphere kintra ither than Australie), an an aa the first time a Portuguese speakin kintra hosts the event. These will be the first Simmer Olympic Gemmes syne the Sydney 2000 Olympics nae tae be held in the host naition's caipital ceety.