Dec. 24 is a legal federal holiday

The Ninth Circuit alerts us that:

By executive order, the President has directed that federal agencies and departments, including the Postal Service, will be closed on December 24, 2019. Therefore, although the Court of Appeals remains open, December 24 will be treated as a legal holiday for the purposes of all filing deadlines, including jurisdictional deadlines. See Fed. R. App. P. 26(a)(6)(B).