It was already known (blog post) that Wednesday, December 25, 2019 will be a federal holiday in the District of Columbia. Today’s news is that in addition, by order of the President, the federal government will be closed on Tuesday, December 24. This means the USPTO will be closed not only on December 25 but also on December 24. This means that any action that would be due at the USPTO on December 24 or 25 will be timely if it is done by Thursday, December 26, 2019.