Palindromic dates

2016-10-06

Thanks to Marc , I noticed that today's date is a palindrome in two different date formats—DMMYY (61016) and DMMYYYY (6102016).

This made me wonder when there will be another date that is palindromic in multiple date formats, so I wrote a Python script to find out.

Turns out there's not too long to wait: 10 July 2017 will be palindromic in two date formats (MDDYY and MDDYYYY). But before that, there's 1 July 2017, which is palindromic in three date formats (YYMMD, YYMD and MDYY). Most exciting of all, however, is 2 February 2020, which is palindromic in 7 different formats!

The next palindromic dates are shown in the following table. It will update as the dates pass.

\(n\) Next day with \(\geq n\) palindromic formats Formats 1 2 October 2020 YYMMD 2 2 November 2020 YYMMDD,DDMMYY 3 2 January 2021 YYMMD,YYMD,MDYY 4 2 February 2022 YYYYMDD,YYMMD,YYMD,DMYY,MDYY 5 2 February 2022 YYYYMDD,YYMMD,YYMD,DMYY,MDYY 6 1 January 2211 YYMMD,DMYYYY,MDYYYY,YYMD,DMYY,MDYY

A full list of future palindromic dates can be found here

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