Ok, as the comments to the yesterday's post ended up in explanations to each user individually what to do, here's the short version of what happened and what to do about it:
Timezones and air dates/times on Next Episode were off. They were fixed yesterday. You're seeing the Homepage and the Calendar lists according to your timezone.
So if a show airs in the US at 8pm on a Sunday, but you're in Europe - most likely this will be the following Monday for you, in the early AM hours.
If you want to see the shows in your lists the next day, not when they aired - you can offset those lists by 1 day in the homepage settings and in the calendar settings and/or simply change your timezone to a US one.
In show details, if the show timezone is different than yours - you'll see Local Date and Local Time for Next and Previous episode so that you'll know exactly when it airs in your local time.
Let me know if that clears it up and if you have any issues and suggestions! If something is off it'll be fixed!