Sunday nights around 9 or 10 ish... after a couple episodes of star trek or maybe a movie, they're switching it up a bit. I think the stream starts at... 7pm? 8pm? I'm subscribed to the twitch channel so I just wait for the notification and forget the exact times.
I am watching these expanse behind the scene episodes on YouTube and wes chatham is fucking awesome. Episode 3 is with Thomas jane who directed episode 3. Loving this.