Presidents’ Day is a holiday in the United States, originally intended to celebrate the birthday of George Washington, but now honors all presidents of the country. It always occurs on the third Monday of February, which falls on February 19 this year. Unfortunately, Google Assistant seems to be a bit mixed up, as it’s telling people the holiday is in December.
If you ask Google Assistant (or Google Now) when the holiday occurs, it will respond with “Monday, December 24.” That’s quite a ways off from February 19.
Google Assistant is a bit confused about Presidents’ Day was written by the awesome team at Android Police.