{"id":24140,"date":"2015-05-19T07:59:56","date_gmt":"2015-05-19T05:59:56","guid":{"rendered":"https:\/\/mamchenkov.net\/wordpress\/?p=24140"},"modified":"2015-05-19T07:59:56","modified_gmt":"2015-05-19T05:59:56","slug":"june-30-2015-235960","status":"publish","type":"post","link":"https:\/\/mamchenkov.net\/wordpress\/2015\/05\/19\/june-30-2015-235960\/","title":{"rendered":"June 30, 2015 23:59:60"},"content":{"rendered":"<!-- google_ad_section_start -->\n<p><a href=\"https:\/\/aws.amazon.com\/blogs\/aws\/\">AWS Official Blog<\/a> covers the upcoming leap second shenanigans in &#8220;<a href=\"https:\/\/aws.amazon.com\/blogs\/aws\/look-before-you-leap-the-coming-leap-second-and-aws\/\">Look Before You Leap \u2013 The Coming Leap Second and AWS<\/a>&#8220;:<\/p>\n<blockquote><p>The International Earth Rotation and Reference Systems (IERS) recently announced that an <a href=\"http:\/\/datacenter.iers.org\/eop\/-\/somos\/5Rgv\/latest\/16\">extra second will be injected<\/a> into civil time at the end of June 30<sup>th<\/sup>, 2015. This means that the last minute of June 30<sup>th<\/sup>, 2015 will have 61 seconds. If a clock is synchronized to the standard civil time, it will show an extra second 23:59:60 on that day between 23:59:59 and 00:00:00. This extra second is called a leap second. There have been 25 such leap seconds since 1972. The last one took place on June 30<sup>th<\/sup>, 2012.<\/p>\n<p>Not all applications and systems are properly coded to handle this \u201c:60\u201d notation.<\/p><\/blockquote>\n<!-- google_ad_section_end -->\n","protected":false},"excerpt":{"rendered":"<!-- google_ad_section_start -->\n<p>AWS Official Blog covers the upcoming leap second shenanigans in &#8220;Look Before You Leap \u2013 The Coming Leap Second and AWS&#8220;: The International Earth Rotation and Reference Systems (IERS) recently announced that an extra second will be injected into civil time at the end of June 30th, 2015. This means that the last minute of &hellip; <a href=\"https:\/\/mamchenkov.net\/wordpress\/2015\/05\/19\/june-30-2015-235960\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">June 30, 2015 23:59:60<\/span><\/a><\/p>\n<!-- google_ad_section_end -->\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"June 30, 2015 23:59:60 #sysadmin #webdev #hosting #aws #time","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"_links_to":"","_links_to_target":""},"categories":[1,18,133,62,1334],"tags":[3270,239,1330,2289],"keyring_services":[],"class_list":["post-24140","post","type-post","status-publish","format-standard","hentry","category-general","category-programming","category-sysadmin","category-technology","category-web-work","tag-amazon-aws","tag-time","tag-web-development","tag-web-hosting"],"aioseo_notices":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack-related-posts":[{"id":25090,"url":"https:\/\/mamchenkov.net\/wordpress\/2015\/12\/28\/5-aws-mistakes-you-should-avoid\/","url_meta":{"origin":24140,"position":0},"title":"5 AWS mistakes you should avoid","author":"Leonid Mamchenkov","date":"December 28, 2015","format":false,"excerpt":"\"5 AWS mistakes you should avoid\" is a rather opinionated piece on what you should and shouldn't do with your infrastructure, especially, when using AWS. \u00a0Here's an example: A typical web application consists of at least: load balancer scalable web backend database and looks like the following figure. This pattern\u2026","rel":"","context":"In &quot;All&quot;","block_context":{"text":"All","link":"https:\/\/mamchenkov.net\/wordpress\/category\/general\/"},"img":{"alt_text":"typical-web-application","src":"https:\/\/i0.wp.com\/mamchenkov.net\/wordpress\/wp-content\/uploads\/2015\/12\/typical-web-application-500x298.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":42643,"url":"https:\/\/mamchenkov.net\/wordpress\/2019\/05\/24\/falsehoods-programmers-believe-about-unix-time\/","url_meta":{"origin":24140,"position":1},"title":"Falsehoods programmers believe about Unix time","author":"Leonid Mamchenkov","date":"May 24, 2019","format":false,"excerpt":"A while back I blogged a collection of \"Falsehoods programmers believe about ...\". One of those things was time. Today I came across a nice addition to that - \"Falsehoods programmers believe about Unix time\". These three facts all seem eminently sensible and reasonable, right?1. Unix time is the number\u2026","rel":"","context":"In &quot;All&quot;","block_context":{"text":"All","link":"https:\/\/mamchenkov.net\/wordpress\/category\/general\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/mamchenkov.net\/wordpress\/wp-content\/uploads\/2019\/05\/epoch.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":28571,"url":"https:\/\/mamchenkov.net\/wordpress\/2018\/05\/09\/creating-a-1-3-million-vcpu-grid-on-aws-using-ec2-spot-instances-and-tibco-gridserver\/","url_meta":{"origin":24140,"position":2},"title":"Creating a 1.3 Million vCPU Grid on AWS using EC2 Spot Instances and TIBCO GridServer","author":"Leonid Mamchenkov","date":"May 9, 2018","format":false,"excerpt":"This Amazon AWS blog post provides a great insight into the benefits of the cloud computing in general and Amazon AWS in particular.\u00a0 The whole thing is well worth the read, but here are a few of my favorite bits. The scale: The grid grew to 61,299 Spot Instances (1.3\u2026","rel":"","context":"In &quot;All&quot;","block_context":{"text":"All","link":"https:\/\/mamchenkov.net\/wordpress\/category\/general\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":27473,"url":"https:\/\/mamchenkov.net\/wordpress\/2017\/03\/30\/is-it-on-aws\/","url_meta":{"origin":24140,"position":3},"title":"Is it on AWS?","author":"Leonid Mamchenkov","date":"March 30, 2017","format":false,"excerpt":"Is it on AWS? is a simple website that tells you if the server is hosted on the Amazon Web Services infrastructure. 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