We're halfway through The Big Bang Theory spinoff Stuart Fails to Save the Universe, and I still maintain the opinion that it's better than the original CBS sitcom.But that hasn't stopped the two from being heavily intertwined. Over the last four episodes, we've seen cameo appearances from Raj (Kunal Nayyar), Penny (Kaley Cuoco), Bernadette (Melissa Rauch) and Amy (Mayim Bialik). Could this week add a fifth member to the growing party? Judging by the trailer, things are set to feel a little more primitive instead. So, when does Stuart Fails to Save the Universe episode 4 arrive on HBO Max? What time can I watch Stuart Fails to Save the Universe episode 5 on HBO Max?For US viewers, Stuart Fails to Save the Universe episode 5 will drop on Thursday, August 20 at 6pm PT/ 9pm ET.Internationally, you're looking out for these timings:US – Thursday, August 20 at 6pm PT / 9pm ETCanada – Thursday, August 20 at 6pm PT / 9pm ETUK – Friday, August 21 at 2am BSTIndia – Friday, August 21 at 6:30am ISTSingapore – Friday, August 21 at 9am SGTAustralia – Friday, August 21 at 11am AEDTNew Zealand – Friday, August 21 at 12pm NZDTWhen do new episodes of Stuart Fails to Save the Universe come out?(Image credit: HBO Max)New episodes of Stuart Fails to Save the Universe will make landfall every Thursday in the US and on Fridays everywhere else. Here are the all-important dates you need to know about:Episode 1: out nowEpisode 2: out nowEpisode 3: out nowEpisode 4: out nowEpisode 5: August 20Episode 6: August 27Episode 7: September 3Episode 8: September 10Episode 9: September 17Episode 10: September 24