The Aki Basho is September 10 - 24th in Tokyo. Watching it live is the best (there are ways), but in the US our favorite way to keep up with it in the US is through the NHK News app which you can get on the Apple App Store or Google Play Store. You can watch each day’s highlights about a day behind. This works best because of the time difference. They usually offer some live broadcasts the first day, the halfway point and the last day. There are a few good sumo channels on youtube and twitch. Chris Sumo's channel (youtube) is good place to start.