--- title: Little useless-useful R functions – Date Palindrome description: A fun R programming exercise that checks whether dates are palindromes across multiple date formats (YYYYMMDD, MMDDYYYY, DDMMYYYY, and shorter variants). The... canonical: https://daily.dev/posts/little-useless-useful-r-functions-date-palindrome-qv1cvhegn twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Little useless-useful R functions – Date Palindrome | daily.dev og:description: A fun R programming exercise that checks whether dates are palindromes across multiple date formats (YYYYMMDD, MMDDYYYY, DDMMYYYY, and shorter variants). The... og:url: https://daily.dev/posts/little-useless-useful-r-functions-date-palindrome-qv1cvhegn og:image: https://api.daily.dev/og/posts/QV1cvhegN.png og:image:alt: Little useless-useful R functions – Date Palindrome og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Little useless-useful R functions – Date Palindrome **[R-bloggers](https://daily.dev/sources/rbloggers)** · 7 min read · 0 upvotes · 0 comments ## Summary A fun R programming exercise that checks whether dates are palindromes across multiple date formats (YYYYMMDD, MMDDYYYY, DDMMYYYY, and shorter variants). The post presents an R function `IsPalindromeDateRange` that iterates over a date range, formats each date in various regional conventions, and checks if the digit string reads the same forwards and backwards. It also includes a historical analysis of palindrome dates from year 1100 to 2100, noting that DDMMYYYY format produces more palindromes in the 1100s and recent years, while shorter formats distribute palindromes more evenly across centuries. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Dating Backwards](https://daily.dev/posts/dating-backwards-iq6lh0p0l) · The Daily WTF · 1 upvotes · 0 comments - [Little useless-useful R functions – Finding substrings in number Pi](https://daily.dev/posts/little-useless-useful-r-functions-finding-substrings-in-number-pi-6dgsgjgic) · R-bloggers · 0 upvotes · 0 comments --- Tags: [#r](https://daily.dev/tags/r) [View this post on daily.dev](https://daily.dev/posts/little-useless-useful-r-functions-date-palindrome-qv1cvhegn) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Little useless-useful R functions – Date Palindrome","url":"https://daily.dev/posts/little-useless-useful-r-functions-date-palindrome-qv1cvhegn","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/little-useless-useful-r-functions-date-palindrome-qv1cvhegn"},"datePublished":"2026-03-16T00:13:54.349Z","dateModified":"2026-03-16T00:14:16.055Z","description":"A fun R programming exercise that checks whether dates are palindromes across multiple date formats (YYYYMMDD, MMDDYYYY, DDMMYYYY, and shorter variants). 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