Donald Trump may not know what centennial means. During a White House signing ceremony for the Women’s Suffrage Centennial Commemorative Coin Act, Trump remarked:

“They’ve been working on this for years and years.  And I’m curious, why wasn’t it done a long time ago, and also — well, I guess the answer to that is because now I’m President, and we get things done.  We get a lot of things done that nobody else got done.” 

MSNBC’s Steve Benen says:

If Trump is “curious” why other presidents didn’t sign the Women’s Suffrage Centennial Commemorative Coin Act, I can help. In this country, the women’s suffrage movement led to the passage of the 19th Amendment in 1919, and its ratification in 1920.

No one tried to honor the centennial of this because – and this is important – centennials mark the hundredth anniversary of things. In order to recognize the centennial of something that happened in 1920, we had to wait until around 2020, because that’s how time works.