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World Hydrography Day

Dive into World Hydrography Day and explore the depths of our oceans through fascinating maps, charts, and data. Let's celebrate our planet's water resources!
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When it is?
June 21
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United States

Get ready to make a splash on June 21, as we celebrate World Hydrography Day! This international holiday was established by the International Hydrographic Organization (IHO) in 2005 to raise awareness about the importance of hydrography – the science of measuring and charting bodies of water. From ancient civilizations using basic instruments to modern technology mapping every inch of our oceans, hydrography has come a long way and plays a crucial role in ensuring safe navigation and protection of marine life. So let's dive into this exciting holiday and learn more about the fascinating world of hydrography!

History of World Hydrography Day

World Hydrography Day Dates

World Hydrography Day Timeline

<div class='timeline-item'><div class='timeline-left'><div class='timeline-date-text'>1800s</div></div><div class='timeline-center'></div><div class='timeline-right'><div class='timeline-text timeline-text-title'>Early Hydrography</div><div class='timeline-text'>During the 1800s, hydrography began to develop as a science, with countries around the world establishing national hydrographic offices.</div></div></div><div class='timeline-item'><div class='timeline-left'><div class='timeline-date-text'>1921</div></div><div class='timeline-center'></div><div class='timeline-right'><div class='timeline-text timeline-text-title'>IHO Founding</div><div class='timeline-text'>The International Hydrographic Bureau, now known as the International Hydrographic Organization (IHO), was established in Monaco to coordinate global hydrography efforts.</div></div></div><div class='timeline-item'><div class='timeline-left'><div class='timeline-date-text'>1945</div></div><div class='timeline-center'></div><div class='timeline-right'><div class='timeline-text timeline-text-title'>UN Recognizes IHO</div><div class='timeline-text'>The United Nations recognizes the IHO as the competent authority in hydrographic surveying and charting.</div></div></div><div class='timeline-item'><div class='timeline-left'><div class='timeline-date-text'>1970</div></div><div class='timeline-center'></div><div class='timeline-right'><div class='timeline-text timeline-text-title'>Advances in Technology</div><div class='timeline-text'>New technological advancements, such as GPS and sonar, significantly improved the accuracy and efficiency of hydrographic surveys.</div></div></div><div class='timeline-item'><div class='timeline-left'><div class='timeline-date-text'>2005</div></div><div class='timeline-center'></div><div class='timeline-right'><div class='timeline-text timeline-text-title'>World Hydrography Day Established</div><div class='timeline-text'>The IHO established World Hydrography Day to raise global awareness about the importance of hydrography.</div></div></div>

How to Celebrate World Hydrography Day

<div id='' class='facts-item'><div id='' class='facts-header'><h3 id='' class='facts-number'>1</h3></div><div id='' class='facts-text-wrapper'><h3 id='' class='facts-title'>Go on a boat tour</h3><p id='' class='facts-text'>What better way to celebrate World Hydrography Day than by taking a boat tour? Explore the beauty of the world's waterways and learn about the importance of hydrography in mapping and navigation.</p></div></div><div id='' class='facts-item'><div id='' class='facts-header'><h3 id='' class='facts-number'>2</h3></div><div id='' class='facts-text-wrapper'><h3 id='' class='facts-title'>Attend a lecture or workshop</h3><p id='' class='facts-text'>Many organizations and institutions offer lectures and workshops on hydrography and its impact on our world. Attend one to learn more about this important field and its contributions to society.</p></div></div><div id='' class='facts-item'><div id='' class='facts-header'><h3 id='' class='facts-number'>3</h3></div><div id='' class='facts-text-wrapper'><h3 id='' class='facts-title'>Support a marine conservation organization</h3><p id='' class='facts-text'>In honor of World Hydrography Day, consider supporting a marine conservation organization that works to protect our oceans and waterways. Your donation can make a difference in preserving these vital resources for future generations.</p></div></div><div id='' class='facts-item'><div id='' class='facts-header'><h3 id='' class='facts-number'>4</h3></div><div id='' class='facts-text-wrapper'><h3 id='' class='facts-title'>Host a beach clean-up</h3><p id='' class='facts-text'>Gather some friends and family and organize a beach clean-up to celebrate World Hydrography Day. Not only will you be helping to keep our oceans clean, but you'll also be raising awareness about the importance of protecting our waterways.</p></div></div><div id='' class='facts-item'><div id='' class='facts-header'><h3 id='' class='facts-number'>5</h3></div><div id='' class='facts-text-wrapper'><h3 id='' class='facts-title'>Take a virtual dive</h3><p id='' class='facts-text'>Thanks to technology, we can now take virtual dives and explore the depths of our oceans without even getting wet! Celebrate World Hydrography Day by taking a virtual dive and learning about the amazing marine life that exists below the surface.</p></div></div>

Why World Hydrography Day is Important

<div id='' class='whywelove-item'><div id='' class='whywelove-letter-cont'><div class='whywelove-letter'>A</div></div><div id='why-we-love-main-cont'><h3 id='' class='whywelove-title'>Promotes safe and efficient navigation</h3><p id='' class='whywelove-text'>World Hydrography Day raises awareness about the importance of accurate and up-to-date nautical charts in ensuring the safety of ships and crews. By highlighting the role of hydrography in providing reliable information about tides, currents, and depths, this day helps to promote safe and efficient navigation.</p></div></div><div id='' class='whywelove-item'><div id='' class='whywelove-letter-cont'><div class='whywelove-letter'>B</div></div><div id='why-we-love-main-cont'><h3 id='' class='whywelove-title'>Safeguards marine environment</h3><p id='' class='whywelove-text'>Hydrography is also essential for protecting the marine environment. Accurate nautical charts help mariners avoid sensitive areas such as coral reefs, seagrass meadows, and other important habitats. By safeguarding these ecosystems, World Hydrography Day plays a crucial role in preserving our oceans for future generations.</p></div></div><div id='' class='whywelove-item'><div id='' class='whywelove-letter-cont'><div class='whywelove-letter'>C</div></div><div id='why-we-love-main-cont'><h3 id='' class='whywelove-title'>Supports sustainable use of resources</h3><p id='' class='whywelove-text'>Hydrographic data is not only used for safe navigation but also for the sustainable use of marine resources. Accurate charts of the seabed and coastline help with planning and managing activities such as fishing, offshore energy production, and mineral extraction. By recognizing World Hydrography Day, we show our appreciation for the important role hydrographers play in promoting sustainable development.</p></div></div>

5 Fascinating Facts for World Hydrography Day

<div class='facts-item'><div class='facts-number-wrapper'><p class='facts-number'>1</p></div><div class='facts-core-content'><h3 class='facts-title'>Hydrography Helps Predict Natural Disasters</h3><p class='facts-content'>The science of hydrography plays a critical role in predicting and preparing for natural disasters such as tsunamis, hurricanes, and floods by providing accurate information about underwater topography and coastal regions.</p></div></div><div class='facts-item'><div class='facts-number-wrapper'><p class='facts-number'>2</p></div><div class='facts-core-content'><h3 class='facts-title'>Hydrography Has Lunar Origins</h3><p class='facts-content'>Hydrography research extends to lunar waters. In 2009, NASA's Lunar Reconnaissance Orbiter mapped the moon's South Pole, providing hydrographic data about lunar water-ice across its craters.</p></div></div><div class='facts-item'><div class='facts-number-wrapper'><p class='facts-number'>3</p></div><div class='facts-core-content'><h3 class='facts-title'>Hydrography Enables Communication</h3><p class='facts-content'>Hydrographic surveys guide the laying of undersea cables, which carry telecommunications across continents, essentially enabling our modern internet-connected world.</p></div></div><div class='facts-item'><div class='facts-number-wrapper'><p class='facts-number'>4</p></div><div class='facts-core-content'><h3 class='facts-title'>The Planet’s Largest Mountain is Underwater</h3><p class='facts-content'>Mauna Kea, an extinct volcano in Hawaii, is technically the world's tallest mountain. When measured from its base at the seafloor to its peak, it surpasses Mount Everest by over 4,000 feet, a fact revealed through hydrography.</p></div></div><div class='facts-item'><div class='facts-number-wrapper'><p class='facts-number'>5</p></div><div class='facts-core-content'><h3 class='facts-title'>Hydrography Contributes to Archaeology</h3><p class='facts-content'>Hydrography aids in the study of submerged archaeology and shipwrecks which helps us understand our history better. It contributed to the discovery of famous wrecks like the Titanic and the Bismarck.</p></div></div>

World Hydrography Day FAQs

When is World Hydrography Day?

World Hydrography Day is celebrated on June 21 every year. In 2024 World Hydrography Day will occur on a Friday.

World Hydrography Day Dates



Jun 21



Jun 21



Jun 21



Jun 21



Jun 21


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