♦ The principal objective of this day is to entice people’s interest in the work of the IHO at the international level. It is also celebrated to urge international locations to work collectively to defend the marine environment and are seeking for safe global navigation around the world.
♦ Theme for 2021: One hundred years of international cooperation in hydrography.
♦ The United Nations General Assembly general a resolution to rejoice World Hydrography Day on each and every June 21 in 2005.
♦ The day is organised via the International Hydrographic Organization (IHO) for the reason that 2006 to publicise the work of hydrographers and the importance of hydrography.