{"id":3849,"date":"2025-06-19T20:50:06","date_gmt":"2025-06-19T15:20:06","guid":{"rendered":"https:\/\/theiashub.com\/upsc\/?p=3849"},"modified":"2025-10-16T17:26:54","modified_gmt":"2025-10-16T11:56:54","slug":"world-hydrography-day","status":"publish","type":"post","link":"https:\/\/theiashub.com\/upsc\/world-hydrography-day\/","title":{"rendered":"World Hydrography Day 2025 Theme, History &#038; Significance"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-flat ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<label class=\"ez-toc-title ez-toc-toggle\" style=\"cursor:pointer\">Table of Contents<\/label>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #127abf;color:#127abf\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #127abf;color:#127abf\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/theiashub.com\/upsc\/world-hydrography-day\/#World_Hydrography_Day_2025_Overview\">World Hydrography Day 2025 Overview<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/theiashub.com\/upsc\/world-hydrography-day\/#What_is_Hydrography\">What is Hydrography?<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/theiashub.com\/upsc\/world-hydrography-day\/#World_Hydrography_Day_2025_Theme\">World Hydrography Day 2025 Theme<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/theiashub.com\/upsc\/world-hydrography-day\/#World_Hydrography_Day_2025_History\">World Hydrography Day 2025 History<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/theiashub.com\/upsc\/world-hydrography-day\/#How_is_World_Hydrography_Day_2025_Celebrated\">How is World Hydrography Day 2025 Celebrated?<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/theiashub.com\/upsc\/world-hydrography-day\/#Conclusion\">Conclusion<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/theiashub.com\/upsc\/world-hydrography-day\/#World_Hydrography_Day_2025_FAQs\">World Hydrography Day 2025 FAQs<\/a><\/li><\/ul><\/nav><\/div>\n\n<p><span style=\"font-weight: 400;\">World Hydrography Day 2025 is observed on<\/span><b> 21st June 2025<\/b><span style=\"font-weight: 400;\"> to acknowledge the importance of hydrography in ensuring safe navigation, protecting marine conditions, and supporting sustainable aquatic development. Every year on this day, IHO raises awareness about hydrography and its importance in managing our water bodies. As this day is marked as the anniversary of the establishment of the <\/span><b>International Hydrographic Organization (IHO) in 1921<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><b>Also Read: <\/b><a href=\"https:\/\/theiashub.com\/upsc\/list-of-national-and-international-days\/\" target=\"_blank\" rel=\"noopener\"><b>National and International Days 2025<\/b><\/a><\/p>\n<p><b>What is World Hydrography Day?<\/b><\/p>\n<p><span style=\"font-weight: 400;\">World Hydrography Day was first celebrated by IHO in 2005 with the<\/span><b> United Nations General Assembly <\/b><span style=\"font-weight: 400;\">adopting it the same year through Resolution A\/RES\/60\/30. The World Hydrography Day 2025 Date June 21st, commemorates the IHO&#8217;s founding under its original name, the <\/span><b>International Hydrographic Bureau<\/b><span style=\"font-weight: 400;\">, which was changed to the IHO in 1970. This day highlights the benefits of hydrography in the science of measuring and describing the physical features of seas, oceans, and navigable waters and its applications in navigation, environmental protection, and resource management.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Also Read: <\/span><a href=\"https:\/\/theiashub.com\/upsc\/?p=3479&amp;preview=true\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">World Food Safety Day<\/span><\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"World_Hydrography_Day_2025_Overview\"><\/span><b>World Hydrography Day 2025 Overview<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">World Hydrography Day is celebrated every year on 21st June to honor the important role hydrography plays in <\/span><b>maritime safety, global trade, and ocean conservation<\/b><span style=\"font-weight: 400;\">. This day also honors the foundation of the IHO that has been instrumental in advancing marine safety. The <\/span><b>World Hydrography Day 2025 theme<\/b><span style=\"font-weight: 400;\"> focuses on how hydrographic data is contributing to safe, efficient, and sustainable responsible marine activities. This day is marked by seminars, awareness campaigns, and educational events.<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><b>Event\u00a0<\/b><\/td>\n<td><b>Details\u00a0<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Name\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">World Hydrography Day 2025<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Date<\/span><\/td>\n<td><span style=\"font-weight: 400;\">21st June 2025<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">World Hydrography Day 2025 Theme<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Seabed Mapping: Enabling Ocean Action<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Established By\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">International Hydrographic Organization (IHO)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">First Celebrated\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">2006<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Purpose\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">To raise awareness about hydrography and its importance in maritime safety, environmental protection, and sustainable development.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Key Focus Areas<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Seabed mapping, sustainable marine use, safety of navigation, ocean governance<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Global Participants<\/span><\/td>\n<td><span style=\"font-weight: 400;\">IHO member states, maritime agencies, naval and oceanographic institutions\u00a0<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Official Website<\/span><\/td>\n<td><a href=\"https:\/\/iho.int\/\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"font-weight: 400;\">https:\/\/iho.int\/<\/span><\/a><span style=\"font-weight: 400;\">\u00a0<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><b>Also Read: <\/b><a href=\"https:\/\/theiashub.com\/upsc\/important-days-in-june-2025\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">List of Important Days in June 2025<\/span><\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_Hydrography\"><\/span><b>What is Hydrography?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Hydrography is the scientific study of the physical features of oceans, seas, rivers, lakes, and coastal areas. This involves measuring and describing aspects such as <\/span><b>water depth (bathymetry), tides, currents, seabed topography, and potential hazards to navigation<\/b><span style=\"font-weight: 400;\">. The main goal of hydrography is to support safe and efficient maritime navigation through the production of accurate nautical charts.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Hydrographic data is important for port and harbor construction, offshore energy development, coastal zone management, environmental monitoring, and disaster risk reduction. Using advanced technologies like <\/span><b>sonar systems, LiDAR, drones, and satellite imagery<\/b><span style=\"font-weight: 400;\">, hydrographers collect detailed information that informs decision-making in both public and private sectors.\u00a0<\/span><\/p>\n<p><b>Also Read:<\/b> <a href=\"https:\/\/theiashub.com\/upsc\/world-oceans-day-2025\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">World Oceans Day<\/span><\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"World_Hydrography_Day_2025_Theme\"><\/span><b>World Hydrography Day 2025 Theme<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">The World Hydrography Day 2025 Theme is <\/span><b>&#8220;<\/b><b>Seabed Mapping: Enabling Ocean Action.<\/b><b>&#8221; <\/b><span style=\"font-weight: 400;\">This theme highlights how detailed and accurate mapping of the ocean floor forms the foundation for effective ocean governance, marine spatial planning, disaster risk reduction, and protection of biodiversity.\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Enables safer maritime navigation and updated nautical charts<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Supports the <\/span><b>blue economy<\/b><span style=\"font-weight: 400;\">\u2014fisheries, shipping, offshore energy, and tourism<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Helps monitor climate change and coastal erosion<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Informs national and global <\/span><b>ocean policy decisions<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Drives global initiatives like <\/span><b>Seabed 2030<\/b><span style=\"font-weight: 400;\">, aiming to map 100% of the world\u2019s ocean floor by 2030<\/span><\/li>\n<\/ul>\n<p><b>Also Read:<\/b><a href=\"https:\/\/theiashub.com\/upsc\/?p=3527&amp;preview=true\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">World Environment Day<\/span><\/a><\/p>\n<div id=\"metaslider-id-5575\" style=\"width: 100%;\" class=\"ml-slider-3-107-0 metaslider metaslider-flex metaslider-5575 ml-slider has-dots-nav ms-theme-default-base\" role=\"region\" aria-label=\"New Slideshow\" data-height=\"300\" data-width=\"700\">\n    <div id=\"metaslider_container_5575\">\n        <div id=\"metaslider_5575\">\n            <ul aria-live='off' class='slides'>\n                <li style=\"display: block; width: 100%;\" class=\"slide-5579 ms-image \" aria-roledescription=\"slide\" data-date=\"2025-10-11 11:47:58\" data-filename=\"400-X-180cdr-scaled-700x300.jpg\" data-slide-type=\"image\"><a href=\"https:\/\/theiashub.com\/courses\/mains\/upsc-qep-2026-batch-5-english\" target=\"_self\" aria-label=\"View Slide Details\" class=\"metaslider_image_link\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/theiashub.com\/upsc\/wp-content\/uploads\/2025\/10\/400-X-180cdr-scaled.jpg?resize=700%2C300&#038;ssl=1\" height=\"300\" width=\"700\" alt=\"\" class=\"slider-5575 slide-5579 msDefaultImage\" title=\"400 X 180cdr\" \/><\/a><\/li>\n                <li style=\"display: none; width: 100%;\" class=\"slide-5580 ms-image \" aria-roledescription=\"slide\" data-date=\"2025-10-11 11:47:58\" data-filename=\"pocket-notes-website-400x180-1-scaled-700x300.jpg\" data-slide-type=\"image\"><a href=\"https:\/\/theiashub.com\/courses\/upsc-cse-books\/qep-pocket-notes-2.0\" target=\"_self\" aria-label=\"View Slide Details\" class=\"metaslider_image_link\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/theiashub.com\/upsc\/wp-content\/uploads\/2025\/10\/pocket-notes-website-400x180-1-scaled.jpg?resize=700%2C300&#038;ssl=1\" height=\"300\" width=\"700\" alt=\"\" class=\"slider-5575 slide-5580 msDefaultImage\" title=\"pocket-notes-website-400x180\" \/><\/a><\/li>\n                <li style=\"display: none; width: 100%;\" class=\"slide-5581 ms-image \" aria-roledescription=\"slide\" data-date=\"2025-10-11 11:47:58\" data-filename=\"web-site-banner-toppers-book.-400x180-1-scaled-700x300.jpg\" data-slide-type=\"image\"><a href=\"https:\/\/theiashub.com\/courses\/upsc-cse-books\/toppers-handwritten-upsc-pyq-4-books\" target=\"_self\" aria-label=\"View Slide Details\" class=\"metaslider_image_link\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/theiashub.com\/upsc\/wp-content\/uploads\/2025\/10\/web-site-banner-toppers-book.-400x180-1-scaled.jpg?resize=700%2C300&#038;ssl=1\" height=\"300\" width=\"700\" alt=\"\" class=\"slider-5575 slide-5581 msDefaultImage\" title=\"web site banner toppers book. 400x180\" \/><\/a><\/li>\n            <\/ul>\n        <\/div>\n        \n    <\/div>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"World_Hydrography_Day_2025_History\"><\/span><b>World Hydrography Day 2025 History<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">The IHO was established in <\/span><b>1921 <\/b><span style=\"font-weight: 400;\">to provide a mechanism for consultation between governments on matters such as technical standards, safe navigation, and the protection of the marine environment. In 1970, the organization changed its name to the <\/span><b>International Hydrographic Organization<\/b><span style=\"font-weight: 400;\">. In 2005, the IHO adopted the concept of World Hydrography Day, which was welcomed by the United Nations General Assembly in Resolution in 2006.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Every year, the IHO chooses a <\/span><b>World Hydrography Day Theme<\/b><span style=\"font-weight: 400;\"> to promote the importance of hydrography internationally, encourage multilateral cooperation, and foster effective collaboration in data exchange, charting, and standards development.\u00a0<\/span><\/p>\n<p><b>Also Read:<\/b><a href=\"https:\/\/theiashub.com\/upsc\/?p=3706&amp;preview=true\" target=\"_blank\" rel=\"noopener\"> <b>World Day Against Child Labor<\/b><\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_is_World_Hydrography_Day_2025_Celebrated\"><\/span><b>How is World Hydrography Day 2025 Celebrated?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">World Hydrography Day is celebrated around the world through various activities organized by <\/span><b>IHO Member States, international and national hydrographic organizations, and services. <\/b><span style=\"font-weight: 400;\">Some of the activities include<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Workshops and Seminars<\/b><span style=\"font-weight: 400;\">: Educational sessions to raise awareness about hydrography and its applications.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Conferences and Lectures<\/b><span style=\"font-weight: 400;\">: Discussions on advancements in hydrographic science and technology.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Public Events and Demonstrations<\/b><span style=\"font-weight: 400;\">: Interactive exhibits and displays showcasing hydrographic data and tools.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Promotional Materials<\/b><span style=\"font-weight: 400;\">: Distribution of brochures, videos, and other resources to inform the public.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Social Media Campaigns<\/b><span style=\"font-weight: 400;\">: Sharing information and engaging with the public through platforms like Twitter and Facebook.<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span><b>Conclusion<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">World Hydrography Day 2025 is a reminder of the <\/span><b>importance hydrography<\/b><span style=\"font-weight: 400;\"> plays in our daily lives, from ensuring safe maritime navigation to supporting environmental conservation and sustainable development. On this day we acknowledge the contributions of hydrographers around the world and commit to enhancing our understanding and maintenance of the world&#8217;s oceans and waterways.<\/span><\/p>\n<p><b>Are you preparing for UPSC 2026?<\/b><a href=\"https:\/\/theiashub.com\/courses\/prelims\/prelims-samadhaan-mentorship-2025?utm_source=website&amp;utm_medium=home_page&amp;utm_campaign=course\" target=\"_blank\" rel=\"noopener\"> <b>Join IAShub&#8217;s UPSC coaching batches<\/b><\/a><b> to boost your preparation. Enroll now!<\/b><\/p>\n<h2><span class=\"ez-toc-section\" id=\"World_Hydrography_Day_2025_FAQs\"><\/span><b>World Hydrography Day 2025 FAQs<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<style>#sp-ea-3851 .spcollapsing { height: 0; overflow: hidden; transition-property: height;transition-duration: 300ms;}#sp-ea-3851{ position: relative; }#sp-ea-3851 .ea-card{ opacity: 0;}#eap-preloader-3851{ position: absolute; left: 0; top: 0; height: 100%;width: 100%; text-align: center;display: flex; align-items: center;justify-content: center;}#sp-ea-3851.sp-easy-accordion>.sp-ea-single {margin-bottom: 10px; border: 1px solid #e2e2e2; }#sp-ea-3851.sp-easy-accordion>.sp-ea-single>.ea-header a {color: #444;}#sp-ea-3851.sp-easy-accordion>.sp-ea-single>.sp-collapse>.ea-body {background: #fff; color: #444;}#sp-ea-3851.sp-easy-accordion>.sp-ea-single {background: #eee;}#sp-ea-3851.sp-easy-accordion>.sp-ea-single>.ea-header a .ea-expand-icon { float: left; color: #444;font-size: 16px;}.sp-ea-one.sp-easy-accordion .sp-ea-single .ea-header a {\r\n  padding: 7px;\r\n  background: #fff;\r\n}\r\n\r\n.sp-easy-accordion .sp-ea-single .ea-header a {\r\n  font-size: 1rem;\r\n}\r\n.sp-ea-one.sp-easy-accordion .sp-ea-single .ea-header a .ea-expand-icon {\r\n  font-size: 1rem;\r\n}\r\n\r\n.sp-easy-accordion .sp-ea-single .ea-header a .ea-expand-icon {\r\n  margin-right: 0px;\r\n}\r\n\r\n.sp-easy-accordion .sp-ea-single{\r\n background: #fff;\r\n}\r\n\r\n.ea-expand a{\r\n  background: #cfe2ff !important;\r\n}\r\n\r\n.sp-easy-accordion{\r\n  margin-bottom: 1rem;\r\n  margin-top: 1rem;\r\n}<\/style><div id=\"sp_easy_accordion-1750324619\"><div id=\"sp-ea-3851\" class=\"sp-ea-one sp-easy-accordion\" data-ea-active=\"ea-click\" data-ea-mode=\"vertical\" data-preloader=\"1\" data-scroll-active-item=\"1\" data-offset-to-scroll=\"0\"><div id=\"eap-preloader-3851\" class=\"accordion-preloader\"><img decoding=\"async\" src=\"https:\/\/theiashub.com\/upsc\/wp-content\/plugins\/easy-accordion-free\/public\/assets\/ea_loader.svg\" alt=\"Loader image\"\/><\/div><div class=\"ea-card ea-expand sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-38510\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse38510\" aria-controls=\"collapse38510\" href=\"#\" aria-expanded=\"true\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-minus\"><\/i> What is World Hydrography Day?<\/a><\/h3><div class=\"sp-collapse spcollapse collapsed show\" id=\"collapse38510\" data-parent=\"#sp-ea-3851\" role=\"region\" aria-labelledby=\"ea-header-38510\"> <div class=\"ea-body\"><p><span style=\"font-weight: 400\">World Hydrography Day is observed annually on 21st June to raise awareness about the importance of hydrography in safe navigation, marine conservation, and sustainable ocean development. It commemorates the founding of the International Hydrographic Organization (IHO).<\/span><span style=\"font-weight: 400\"><br \/><\/span><\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-38511\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse38511\" aria-controls=\"collapse38511\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> When is World Hydrography Day 2025?<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse38511\" data-parent=\"#sp-ea-3851\" role=\"region\" aria-labelledby=\"ea-header-38511\"> <div class=\"ea-body\"><p><span style=\"font-weight: 400\">World Hydrography Day 2025 will be celebrated on Saturday, 21st June 2025.<\/span><span style=\"font-weight: 400\"><br \/><\/span><\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-38512\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse38512\" aria-controls=\"collapse38512\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> What is the World Hydrography Day 2025 theme?<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse38512\" data-parent=\"#sp-ea-3851\" role=\"region\" aria-labelledby=\"ea-header-38512\"> <div class=\"ea-body\"><p><span style=\"font-weight: 400\">The theme for World Hydrography Day 2025 is \u201cSeabed Mapping: Enabling Ocean Action.\u201d This highlights how mapping the ocean floor supports navigation safety, ocean governance, climate monitoring, and biodiversity protection.<\/span><\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-38513\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse38513\" aria-controls=\"collapse38513\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> Who organizes World Hydrography Day?<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse38513\" data-parent=\"#sp-ea-3851\" role=\"region\" aria-labelledby=\"ea-header-38513\"> <div class=\"ea-body\"><p><span style=\"font-weight: 400\">World Hydrography Day is coordinated by the International Hydrographic Organization (IHO) in collaboration with its member states, maritime agencies, and scientific organizations.<\/span><\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-38514\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse38514\" aria-controls=\"collapse38514\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> When was World Hydrography Day first celebrated?<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse38514\" data-parent=\"#sp-ea-3851\" role=\"region\" aria-labelledby=\"ea-header-38514\"> <div class=\"ea-body\"><p><span style=\"font-weight: 400\">World Hydrography Day was first celebrated in 2006, after being officially recognized by the United Nations General Assembly in 2005.<\/span><\/p><\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>World Hydrography Day 2025 will be celebrated on 21st June with the theme \u201cSeabed Mapping: Enabling Ocean Action\u201d to promote safe navigation, ocean conservation, and the role of hydrography in sustainable marine development.<\/p>\n","protected":false},"author":3,"featured_media":3875,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[2],"tags":[],"class_list":["post-3849","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"_links":{"self":[{"href":"https:\/\/theiashub.com\/upsc\/wp-json\/wp\/v2\/posts\/3849","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/theiashub.com\/upsc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/theiashub.com\/upsc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/theiashub.com\/upsc\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/theiashub.com\/upsc\/wp-json\/wp\/v2\/comments?post=3849"}],"version-history":[{"count":4,"href":"https:\/\/theiashub.com\/upsc\/wp-json\/wp\/v2\/posts\/3849\/revisions"}],"predecessor-version":[{"id":6049,"href":"https:\/\/theiashub.com\/upsc\/wp-json\/wp\/v2\/posts\/3849\/revisions\/6049"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/theiashub.com\/upsc\/wp-json\/wp\/v2\/media\/3875"}],"wp:attachment":[{"href":"https:\/\/theiashub.com\/upsc\/wp-json\/wp\/v2\/media?parent=3849"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/theiashub.com\/upsc\/wp-json\/wp\/v2\/categories?post=3849"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/theiashub.com\/upsc\/wp-json\/wp\/v2\/tags?post=3849"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}