--- title: Fwd: Bulletin C number 71 | daily.dev description: IERS Bulletin C number 71 confirms no leap second will be introduced at the end of June 2026. The UTC-TAI difference remains at -37 seconds since January 1,... canonical: https://daily.dev/posts/fwd-bulletin-c-number-71-cirm6ctec twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Fwd: Bulletin C number 71 | daily.dev og:description: IERS Bulletin C number 71 confirms no leap second will be introduced at the end of June 2026. The UTC-TAI difference remains at -37 seconds since January 1,... og:url: https://daily.dev/posts/fwd-bulletin-c-number-71-cirm6ctec og:image: https://api.daily.dev/og/posts/CirM6cTec.png og:image:alt: Fwd: Bulletin C number 71 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. # Fwd: Bulletin C number 71 **[Hacker News](https://daily.dev/sources/hn)** · 2 min read · 0 upvotes · 0 comments ## Summary IERS Bulletin C number 71 confirms no leap second will be introduced at the end of June 2026. The UTC-TAI difference remains at -37 seconds since January 1, 2017. Tim Parenti forwarded this announcement to the tz mailing list along with a patch update for the leap-seconds list file, which now expires on December 28, 2026. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [The technical actions needed to ensure the continuity of UTC](https://daily.dev/posts/the-technical-actions-needed-to-ensure-the-continuity-of-utc-czabvh2py) · Hacker News · 0 upvotes · 0 comments - [Ask HN: Are systems ready for the first negative leap second?](https://daily.dev/posts/ask-hn-are-systems-ready-for-the-first-negative-leap-second--whf0jsguw) · Hacker News · 0 upvotes · 0 comments - [PSA: Europe changes time forward soon, North America next, for the last time?](https://daily.dev/posts/psa-europe-changes-time-forward-soon-north-america-next-for-the-last-time--oyprjb4ut) · Planet Python · 0 upvotes · 0 comments --- [View this post on daily.dev](https://daily.dev/posts/fwd-bulletin-c-number-71-cirm6ctec) ```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":"Fwd: Bulletin C number 71","url":"https://daily.dev/posts/fwd-bulletin-c-number-71-cirm6ctec","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/fwd-bulletin-c-number-71-cirm6ctec"},"datePublished":"2026-03-10T03:08:10.939Z","dateModified":"2026-03-10T03:08:31.120Z","description":"IERS Bulletin C number 71 confirms no leap second will be introduced at the end of June 2026. The UTC-TAI difference remains at -37 seconds since January 1,...","image":"https://media.daily.dev/image/upload/s--2-1xRawN--/f_auto/v1722860399/public/Placeholder%2011","thumbnailUrl":"https://media.daily.dev/image/upload/s--2-1xRawN--/f_auto/v1722860399/public/Placeholder%2011","isAccessibleForFree":true,"articleSection":"Hacker News","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Hacker News","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/hn","url":"https://daily.dev/sources/hn"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/fwd-bulletin-c-number-71-cirm6ctec","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"","timeRequired":"PT2M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Hacker News","item":"https://daily.dev/sources/hn"},{"@type":"ListItem","position":3,"name":"Fwd: Bulletin C number 71"}]} ```