mscroggs.co.uk
mscroggs.co.uk

subscribe

Blog

 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 formatsFormats
1Today!MDDYY
29 October 2019DMMYYYY,DMMYY
32 February 2020YYYYMMDD,DDMMYYYY,MMDDYYYY,YYYYMDD,YYMDD,DDMYY,MMDYY
42 February 2020YYYYMMDD,DDMMYYYY,MMDDYYYY,YYYYMDD,YYMDD,DDMYY,MMDYY
52 February 2020YYYYMMDD,DDMMYYYY,MMDDYYYY,YYYYMDD,YYMDD,DDMYY,MMDYY
62 February 2020YYYYMMDD,DDMMYYYY,MMDDYYYY,YYYYMDD,YYMDD,DDMYY,MMDYY
72 February 2020YYYYMMDD,DDMMYYYY,MMDDYYYY,YYYYMDD,YYMDD,DDMYY,MMDYY
A full list of future palindromic dates can be found here.

Similar posts

Dragon curves II
Logical contradictions
Dragon curves
How OEISbot works

Comments

Comments in green were written by me. Comments in blue were not written by me.
 Add a Comment 


I will only use your email address to reply to your comment (if a reply is needed).

Allowed HTML tags: <br> <a> <small> <b> <i> <s> <sup> <sub> <u> <spoiler> <ul> <ol> <li>
To prove you are not a spam bot, please type "orez" backwards in the box below (case sensitive):

Archive

Show me a random blog post
 2019 

Sep 2019

A non-converging LaTeX document
TMiP 2019 treasure punt

Jul 2019

Big Internet Math-Off stickers 2019

Jun 2019

Proving a conjecture

Apr 2019

Harriss and other spirals

Mar 2019

realhats

Jan 2019

Christmas (2018) is over
 2018 
▼ show ▼
 2017 
▼ show ▼
 2016 
▼ show ▼
 2015 
▼ show ▼
 2014 
▼ show ▼
 2013 
▼ show ▼
 2012 
▼ show ▼

Tags

big internet math-off cambridge a gamut of games game of life reuleaux polygons misleading statistics folding tube maps platonic solids final fantasy raspberry pi weather station london underground mathsjam flexagons bubble bobble folding paper realhats stickers propositional calculus game show probability javascript pac-man draughts people maths interpolation world cup harriss spiral puzzles national lottery latex sport pythagoras asteroids statistics programming coins manchester science festival christmas card wool graph theory noughts and crosses trigonometry inline code mathslogicbot palindromes books tmip hats martin gardner chalkdust magazine tennis pizza cutting arithmetic ternary football dates craft sound data mathsteroids cross stitch plastic ratio royal baby countdown chebyshev menace manchester the aperiodical sorting curvature matt parker speed twitter light golden ratio logic python dragon curves braiding geometry radio 4 nine men's morris chess games bodmas news electromagnetic field machine learning probability triangles go binary dataset approximation rugby accuracy hexapawn golden spiral map projections gerry anderson reddit talking maths in public estimation london rhombicuboctahedron fractals php video games european cup frobel polynomials error bars oeis captain scarlet christmas

Archive

Show me a random blog post
▼ show ▼
© Matthew Scroggs 2019