16 May – IOC sent letters inviting the National Olympic Committees (NOCs) to submit bids July and August – IOC asked for NOCs to submit letters regarding compliance with the World Anti-doping Agency code by 29 July. The IOC also requested submissions of proposed dates if countries want to stage the Games outside the normal period set by the IOC (15 July to 31 August). The IOC responded to NOCs on these points by the end of August.