The basics: Who, what, when and how to watch.
Who: Fiona Hill and David Holmes will testify during a morning session. There is no afternoon session scheduled.
What: The House Intelligence Committee, led by its chairman, Representative Adam B. Schiff, Democrat of California, will continue to examine the case for impeaching Mr. Trump. The Republican minority, led by Representative Devin Nunes of California, will again work to poke holes in testimony implicating the president.
When and Where: The morning proceedings start at 9 Eastern in the House Ways and Means Committee chambers. It will most likely last until the afternoon.
How to Watch: The New York Times will stream the testimony live, and a team of reporters in Washington will provide real-time context and analysis of the events on Capitol Hill. Follow along at nytimes.com, starting a few minutes before 9.