Every year the World Hydrography Day is observed on 21 June to make the public aware of hydrography and the essential role that it plays in everyone’s life. The main objective of this day is to attract people’s attention to the work of the IHO at the international level. It is also celebrated to urge countries to work together to protect the marine environment and seek safe international navigation around the world.
The theme for 2021 WHD is “One hundred years of international cooperation in hydrography”.
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The United Nations General Assembly accepted a resolution to celebrate World Hydrography Day on every June 21 in 2005. The day is organised by the International Hydrographic Organization (IHO) since 2006 to publicise the work of hydrographers and the importance of hydrography.
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