The UFC has reportedly made plans for yet another card in Brazil, this time in Brasilia, the nation's capital. Brazilian magazine Tatame originally reported the story, although it's not yet been confirmed. It should be noted that in a recent interview with our own Steph Daniels, UFC commentator Jon Anik made reference to this rumored event with the date included.
There are two separate reasons of importance for the Wednesday, September 4th date:
1.) It is on Independence Day week in Brazil. The national holiday is celebrated on September 7th, so the timing and location of this show is likely related to this.
2.) The Ultimate Fighter 18 premieres on the same night. During the Spike TV era, the UFC would frequently hold live events on the channel to serve as a lead-in to the latest season of TUF. The last time they did this was season 12, but with the UFC designating Wednesday as their flagship day for FS1 content, it looks like they'll be returning to the old format of a live fight card before a TUF premiere.
This would be the UFC's 5th event in Brazil this year and 9th overall since their return to the country in August 2011. It also comes 4 days after UFC 164 in Milwaukee.