PORTLAND, Ore. (KOIN) — Every date from Sept. 10 through Sept. 19, 2019, has the special distinction of being a palindrome date.
A palindrome is a word or phrase that is spelled the same backward as it is frontwards, like race car. That same concept can apply to dates like 9/1/19 — aka 91/1/9.
September has 11 palindrome dates — the first was on Sept. 1, but the rest are all in a row starting Tuesday.
According to Aziz Inan, a professor at the University of Portland, Sept. 10 is special because it’s a palindrome when you include the whole year, 9/10/2019 — while the others are only palindromes when you write them with 2-digit years — 9/11/19, 9/12/19 etc.
Every year since 2011 has included one month with 11 palindrome dates. The month has shifted each year, but in 2020, it will be February instead of October.