{"id":1217,"date":"2020-06-26T15:52:46","date_gmt":"2020-06-26T13:52:46","guid":{"rendered":"https:\/\/www.ott.com\/blog\/?p=1217"},"modified":"2021-04-08T10:07:26","modified_gmt":"2021-04-08T08:07:26","slug":"iridium-epoch-halftime-rollover","status":"publish","type":"post","link":"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/","title":{"rendered":"Iridium Epoch Halftime Rollover"},"content":{"rendered":"<p>The purpose of this advisory is to provide information about the Iridium Time (IRT) Epoch Halftime event. This notification is to assure OTT HydroMet customers who use Iridium Time in their applications that the logger will function properly before and after the upcoming halftime event on June 25, 2020 at 13:29.21 UTC. During prior Iridium Halftime transitions, Iridium has noted that some partners were using the IRT in a manner that might cause issues when signed instead of unsigned when 32-bit integer variables are used.\u00a0 Also note that this is a \u2018mid-epoch\u2019 or \u2018Halftime\u2019 rollover and not a true \u2018full epoch\u2019 rollover.<\/p>\n<p>OTT HydroMet has validated that the current SUTRON Loggers including:<\/p>\n<ul>\n<li>SatLink 3<\/li>\n<li>XLink 100 \/ 500<\/li>\n<li>9210<\/li>\n<li>IridiumLink<\/li>\n<li>Xpert<\/li>\n<li>8310<\/li>\n<li>7310<\/li>\n<\/ul>\n<p>All handle the \u2018halftime transition\u2019 properly as they all use the necessary unsigned 32-bit arithmetic.\u00a0 <strong>There is no action necessary for the customer that is using Iridium with OTT HydroMet loggers.<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>More info on the SUTRON Loggers:<\/p>\n<p><a href=\"https:\/\/www.otthydromet.com\/en\/Products\/data-collection-and-software?origin=dropdown&amp;c1=our-products&amp;c2=data-collection-and-software&amp;clickedon=data-collection-and-software\" target=\"_blank\" rel=\"noopener noreferrer\"><img decoding=\"async\" class=\"alignnone wp-image-1041\" src=\"http:\/\/blogottprod.wpengine.com\/wp-content\/uploads\/2020\/02\/CTA-Blog-Post-EN-learn-more.png\" alt=\"\" width=\"219\" height=\"23\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The purpose of this advisory is to provide information about the Iridium Time (IRT) Epoch Halftime event. This notification is to assure OTT HydroMet customers who use Iridium Time in their applications that the logger will function properly before and after the upcoming halftime event on June 25, 2020 at 13:29.21 UTC. During prior Iridium [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":1020299,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[113,116,125],"class_list":["post-1217","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hydrology","tag-datalogger","tag-remote-communication","tag-telemetry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Iridium Epoch Halftime Rollover - OTT Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Iridium Epoch Halftime Rollover - OTT Blog\" \/>\n<meta property=\"og:description\" content=\"The purpose of this advisory is to provide information about the Iridium Time (IRT) Epoch Halftime event. This notification is to assure OTT HydroMet customers who use Iridium Time in their applications that the logger will function properly before and after the upcoming halftime event on June 25, 2020 at 13:29.21 UTC. During prior Iridium [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/\" \/>\n<meta property=\"og:site_name\" content=\"OTT Blog\" \/>\n<meta property=\"article:published_time\" content=\"2020-06-26T13:52:46+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-04-08T08:07:26+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blog.otthydromet.com\/wp-content\/uploads\/2020\/06\/Satellite-nasa-yZygONrUBe8-unsplash-e1593186745422-1-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2000\" \/>\n\t<meta property=\"og:image:height\" content=\"1070\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"OTT HydroMet Blog Team\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"OTT HydroMet Blog Team\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/\"},\"author\":{\"name\":\"OTT HydroMet Blog Team\",\"@id\":\"https:\/\/blog.otthydromet.com\/en\/#\/schema\/person\/af95a261e2bd0d6e87f32548016cbddd\"},\"headline\":\"Iridium Epoch Halftime Rollover\",\"datePublished\":\"2020-06-26T13:52:46+00:00\",\"dateModified\":\"2021-04-08T08:07:26+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/\"},\"wordCount\":155,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/blog.otthydromet.com\/en\/#organization\"},\"image\":{\"@id\":\"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blog.otthydromet.com\/wp-content\/uploads\/2020\/06\/Satellite-nasa-yZygONrUBe8-unsplash-e1593186745422-1-scaled.jpg\",\"keywords\":[\"Datalogger\",\"Remote Communication\",\"Telemetry\"],\"articleSection\":[\"Hydrology\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/\",\"url\":\"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/\",\"name\":\"Iridium Epoch Halftime Rollover - OTT Blog\",\"isPartOf\":{\"@id\":\"https:\/\/blog.otthydromet.com\/en\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blog.otthydromet.com\/wp-content\/uploads\/2020\/06\/Satellite-nasa-yZygONrUBe8-unsplash-e1593186745422-1-scaled.jpg\",\"datePublished\":\"2020-06-26T13:52:46+00:00\",\"dateModified\":\"2021-04-08T08:07:26+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/#primaryimage\",\"url\":\"https:\/\/blog.otthydromet.com\/wp-content\/uploads\/2020\/06\/Satellite-nasa-yZygONrUBe8-unsplash-e1593186745422-1-scaled.jpg\",\"contentUrl\":\"https:\/\/blog.otthydromet.com\/wp-content\/uploads\/2020\/06\/Satellite-nasa-yZygONrUBe8-unsplash-e1593186745422-1-scaled.jpg\",\"width\":2000,\"height\":1070,\"caption\":\"@nasa\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Startseite\",\"item\":\"https:\/\/blog.otthydromet.com\/en\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Iridium Epoch Halftime Rollover\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/blog.otthydromet.com\/en\/#website\",\"url\":\"https:\/\/blog.otthydromet.com\/en\/\",\"name\":\"OTT Blog\",\"description\":\"HydroMet\",\"publisher\":{\"@id\":\"https:\/\/blog.otthydromet.com\/en\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/blog.otthydromet.com\/en\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/blog.otthydromet.com\/en\/#organization\",\"name\":\"OTT HydroMet\",\"url\":\"https:\/\/blog.otthydromet.com\/en\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/blog.otthydromet.com\/en\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/blog.otthydromet.com\/wp-content\/uploads\/2020\/07\/ottblog_logo.svg\",\"contentUrl\":\"https:\/\/blog.otthydromet.com\/wp-content\/uploads\/2020\/07\/ottblog_logo.svg\",\"width\":176,\"height\":60,\"caption\":\"OTT HydroMet\"},\"image\":{\"@id\":\"https:\/\/blog.otthydromet.com\/en\/#\/schema\/logo\/image\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\/\/blog.otthydromet.com\/en\/#\/schema\/person\/af95a261e2bd0d6e87f32548016cbddd\",\"name\":\"OTT HydroMet Blog Team\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/blog.otthydromet.com\/wp-content\/uploads\/2020\/02\/OTT_HydroMet_icon_512x512-150x150.png\",\"url\":\"https:\/\/blog.otthydromet.com\/wp-content\/uploads\/2020\/02\/OTT_HydroMet_icon_512x512-150x150.png\",\"contentUrl\":\"https:\/\/blog.otthydromet.com\/wp-content\/uploads\/2020\/02\/OTT_HydroMet_icon_512x512-150x150.png\",\"caption\":\"OTT HydroMet Blog Team\"},\"description\":\"Observing the elements is key to better understanding our planet. This blog tells the manifold stories of experts working in environmental monitoring with help of our sensors and solutions.\",\"sameAs\":[\"https:\/\/blog.otthydromet.com\/en\/\"],\"url\":\"https:\/\/blog.otthydromet.com\/en\/author\/ott-hydromet-blog-team\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Iridium Epoch Halftime Rollover - OTT Blog","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/","og_locale":"en_US","og_type":"article","og_title":"Iridium Epoch Halftime Rollover - OTT Blog","og_description":"The purpose of this advisory is to provide information about the Iridium Time (IRT) Epoch Halftime event. This notification is to assure OTT HydroMet customers who use Iridium Time in their applications that the logger will function properly before and after the upcoming halftime event on June 25, 2020 at 13:29.21 UTC. During prior Iridium [&hellip;]","og_url":"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/","og_site_name":"OTT Blog","article_published_time":"2020-06-26T13:52:46+00:00","article_modified_time":"2021-04-08T08:07:26+00:00","og_image":[{"width":2000,"height":1070,"url":"https:\/\/blog.otthydromet.com\/wp-content\/uploads\/2020\/06\/Satellite-nasa-yZygONrUBe8-unsplash-e1593186745422-1-scaled.jpg","type":"image\/jpeg"}],"author":"OTT HydroMet Blog Team","twitter_card":"summary_large_image","twitter_misc":{"Written by":"OTT HydroMet Blog Team","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/#article","isPartOf":{"@id":"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/"},"author":{"name":"OTT HydroMet Blog Team","@id":"https:\/\/blog.otthydromet.com\/en\/#\/schema\/person\/af95a261e2bd0d6e87f32548016cbddd"},"headline":"Iridium Epoch Halftime Rollover","datePublished":"2020-06-26T13:52:46+00:00","dateModified":"2021-04-08T08:07:26+00:00","mainEntityOfPage":{"@id":"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/"},"wordCount":155,"commentCount":0,"publisher":{"@id":"https:\/\/blog.otthydromet.com\/en\/#organization"},"image":{"@id":"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/#primaryimage"},"thumbnailUrl":"https:\/\/blog.otthydromet.com\/wp-content\/uploads\/2020\/06\/Satellite-nasa-yZygONrUBe8-unsplash-e1593186745422-1-scaled.jpg","keywords":["Datalogger","Remote Communication","Telemetry"],"articleSection":["Hydrology"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/","url":"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/","name":"Iridium Epoch Halftime Rollover - OTT Blog","isPartOf":{"@id":"https:\/\/blog.otthydromet.com\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/#primaryimage"},"image":{"@id":"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/#primaryimage"},"thumbnailUrl":"https:\/\/blog.otthydromet.com\/wp-content\/uploads\/2020\/06\/Satellite-nasa-yZygONrUBe8-unsplash-e1593186745422-1-scaled.jpg","datePublished":"2020-06-26T13:52:46+00:00","dateModified":"2021-04-08T08:07:26+00:00","breadcrumb":{"@id":"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/#primaryimage","url":"https:\/\/blog.otthydromet.com\/wp-content\/uploads\/2020\/06\/Satellite-nasa-yZygONrUBe8-unsplash-e1593186745422-1-scaled.jpg","contentUrl":"https:\/\/blog.otthydromet.com\/wp-content\/uploads\/2020\/06\/Satellite-nasa-yZygONrUBe8-unsplash-e1593186745422-1-scaled.jpg","width":2000,"height":1070,"caption":"@nasa"},{"@type":"BreadcrumbList","@id":"https:\/\/blog.otthydromet.com\/en\/iridium-epoch-halftime-rollover\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Startseite","item":"https:\/\/blog.otthydromet.com\/en\/"},{"@type":"ListItem","position":2,"name":"Iridium Epoch Halftime Rollover"}]},{"@type":"WebSite","@id":"https:\/\/blog.otthydromet.com\/en\/#website","url":"https:\/\/blog.otthydromet.com\/en\/","name":"OTT Blog","description":"HydroMet","publisher":{"@id":"https:\/\/blog.otthydromet.com\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/blog.otthydromet.com\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/blog.otthydromet.com\/en\/#organization","name":"OTT HydroMet","url":"https:\/\/blog.otthydromet.com\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/blog.otthydromet.com\/en\/#\/schema\/logo\/image\/","url":"https:\/\/blog.otthydromet.com\/wp-content\/uploads\/2020\/07\/ottblog_logo.svg","contentUrl":"https:\/\/blog.otthydromet.com\/wp-content\/uploads\/2020\/07\/ottblog_logo.svg","width":176,"height":60,"caption":"OTT HydroMet"},"image":{"@id":"https:\/\/blog.otthydromet.com\/en\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/blog.otthydromet.com\/en\/#\/schema\/person\/af95a261e2bd0d6e87f32548016cbddd","name":"OTT HydroMet Blog Team","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/blog.otthydromet.com\/wp-content\/uploads\/2020\/02\/OTT_HydroMet_icon_512x512-150x150.png","url":"https:\/\/blog.otthydromet.com\/wp-content\/uploads\/2020\/02\/OTT_HydroMet_icon_512x512-150x150.png","contentUrl":"https:\/\/blog.otthydromet.com\/wp-content\/uploads\/2020\/02\/OTT_HydroMet_icon_512x512-150x150.png","caption":"OTT HydroMet Blog Team"},"description":"Observing the elements is key to better understanding our planet. This blog tells the manifold stories of experts working in environmental monitoring with help of our sensors and solutions.","sameAs":["https:\/\/blog.otthydromet.com\/en\/"],"url":"https:\/\/blog.otthydromet.com\/en\/author\/ott-hydromet-blog-team\/"}]}},"_links":{"self":[{"href":"https:\/\/blog.otthydromet.com\/en\/wp-json\/wp\/v2\/posts\/1217","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.otthydromet.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.otthydromet.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.otthydromet.com\/en\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.otthydromet.com\/en\/wp-json\/wp\/v2\/comments?post=1217"}],"version-history":[{"count":0,"href":"https:\/\/blog.otthydromet.com\/en\/wp-json\/wp\/v2\/posts\/1217\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.otthydromet.com\/en\/wp-json\/wp\/v2\/media\/1020299"}],"wp:attachment":[{"href":"https:\/\/blog.otthydromet.com\/en\/wp-json\/wp\/v2\/media?parent=1217"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.otthydromet.com\/en\/wp-json\/wp\/v2\/categories?post=1217"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.otthydromet.com\/en\/wp-json\/wp\/v2\/tags?post=1217"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}