Is the stadium inside open for public visit on a non-playing day. If so, what are the timings?

Take a tour of Yankee Stadium and learn the history about the 27-time World Series Champion New York Yankees! Get up close to historic baseball artifacts, visit exclusive locations, and learn about the various events that take place at the Stadium throughout history. Each tour is led by one of our knowledgeable and experienced tour guides call Tours Department at 646-977-TOUR (8687) to schedule

yes there are tours for the public

Check online for stadium tours

Yes, there are a lot of tours daily, you should check on internet. 🙌

Yes