World Hydrography Day is celebrated annually on June 21 to raise awareness of the importance of hydrography and the work of hydrographers. Hydrography is the science of measuring and describing the ...

The World Hydrography Day is observed every year on June 21, which recognises the importance of hydrography that ensures safe navigation, supports sustainable marine resource management, and protects ...

World Hydrography Day is observed every year. This year, the significant day will be observed on Saturday, 2025. The day aims to raise awareness about hydrography and its contributions to marine ...