Dec. 2, 2021, is a doubly rare date

Today’s date is rare, and it’s not just because it’s a palindrome. 

Dec. 2, 2021, written out numerically as 12/02/2021, is a palindrome because it reads the same backward as it does forward. But what makes Thursday’s date extra uncommon is that it can also be read upside down just the same. 

If you drop the slash marks from today’s date and punch it into an analog calculator, you’ll get the same image no matter which way you view it: upside down or right sideup.

Tyler Roney, a meteorologist in Sioux Falls, South Dakota, displayed the ambigram on Twitter, but it might require you tilting your head to the side or flipping your phone upside down to see it both ways.

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