Let's make this the official thread.
We just put up a viewing streaming guide / schedule with links on the homepage. Let me know if that is helpful.
USA Network is the best place to watch in the US (Tim Hutchings on the broadcast). The live stream below is the international feed which isn't Tim Hutchings. NBC regular presumable will cut in for certain events.
8:00 PM W 100 Metres R1
8:15 PM M High Jump Q
8:30 PM M 3000 Steeple R1
8:45 PM M Discus Throw Q
9:25 PM W 800 Metres R1
10:20 PM M Discus Throw Q
10:25 PM M 400 Metres H R1
11:15 PM W 100 Metres R2
https://stream.nbcolympics.com/track-and-field-session-2-mens-discus-qualifying