When could the shutdown end? Five key dates to watch

The shutdown became one of the three longest in U.S. history on Friday, with lawmakers indicating they believe it will drag on and few signs emerging of progress toward reopening the government.

That isn’t stopping questions about what could force lawmakers toward the negotiating table to figure out a resolution, especially with a number of potential pressure points front and center for lawmakers in the coming weeks. 

Here are some key dates to keep an eye on...