If you are a fan of patterns in numbers, this year is chock full of them.
For Americans, Wednesday began a series of dates that form palindromes using the month, day, and year format – 1/20/21 – that can be read forwards and backwards, reports CNN.
And because U.S. Presidential Inaugurations fall on Jan. 20, it was the first time the event occurred on a palindrome date, according to the Farmers’ Almanac. The next time this will occur will be in 1,000 years, on Jan. 20, 3021.
The palindromes will continue until Jan. 29, when the date will read 1/29/21.
Americans will have to wait until the beginning of December for 10 more days of palindrome fun when the dates 12/1/21 through to 12/9/21 hit the calendar.
In Canada, we officially use the day, month, and year format. We hit our first palindrome of the year on Jan. 12 – 12/1/21.
This pattern will only happen once a month for nine months (12/2/21, 12/3/21, etc.) until September (12/9/21), and then once again in November (12/11/21).
Meanwhile, Thursday is a milestone on the calendar that happens only once in 100 years: this is the 21st day of the 21st year of the 21st century. This won’t happen again until Jan. 22, 2122.