# A Backwards Day

A palindrome is a word that is spelled the same backwards and forwards, like toot and racecar. Can you think of any others? It turns out numbers can do the same thing — like today’s date! Today is written as 1/20/21, which means the 20th day of the 1st month (January). In fact, we’re just starting a whole stretch of palindrome days that will last through 1/29/21. Don’t forget, 1/2/21 was a palindrome, too! We’ve been having cool streaks like this for the past few years, like 9/17/19, and 8/12/18…but today is extra special because it works even with the full year: 1/20/2021! Let’s see how often these cool dates happen.

Wee ones: How do you say “123” in backwards order?

Little kids: If you say “221” in backwards order, is it the same or different? How about 454? Bonus: How old will you be the next time your age is the same backwards and forwards?

Big kids: The digits of 1/20/21 add up to 6 (1 + 2 + 0 + 2 + 1). What’s the next date (using 2 digits for the year) with digits that add up to 6? Bonus: Are there any more future dates in 2021 with digits that add up to 6?

The sky’s the limit: If you’re allowed to write both the month and year as 2 digits, when’s the first year when we won’t have any palindromic dates? (For example, in 2030 you can write March as 03).