Show me a random blog post


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


Show me a random blog post
▼ show ▼
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
11 September 2019YYMMD,YYMD,MDYY
21 September 2019YYMMD,YYMD,MDYY
31 September 2019YYMMD,YYMD,MDYY
A full list of future palindromic dates can be found here.

Similar posts

Dragon curves II
Logical contradictions
Dragon curves
How OEISbot works


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 "segment" in the box below (case sensitive):
© Matthew Scroggs 2019