Watch Mark Zuckerberg's first congressional hearing at 2:15PM ET

The Facebook CEO will speak to the Senate Commerce and Judiciary Committees today.

After a couple weeks of anticipation, Facebook CEO Mark Zuckerberg will make the first of two appearances before congressional committees this afternoon. At 2:15PM ET, Zuckerberg with testify before both the Senate Commerce, Science and Transportation Committee and the Senate Committee on the Judiciary on privacy and user data. This is the first of two days appearances before Congress this week as the Facebook chief will also appear before the House Energy and Commerce Committee tomorrow morning.

You can watch Zuckerberg's testimony live via the Judiciary Committee website this afternoon. If you prefer to watch on Twitter, Bloomberg's TicToc will offer a livestream there. Several other outlets are streaming to YouTube and Facebook, and we've embedded the feed from PBS News Hour down below for easy access when the time comes. Wherever you choose to watch, you might want to get comfy: New York Times reports 44 senators are on the docket and they each will get four minutes to question the CEO.

For now, catch up on what you can expect from this week's proceedings right here.