World Hydrography Day (WHD)
WHD is celebrated each year on June 21st.
On 29th November 2005, the United Nations adopted Resolution A/60/30, that includes the statement,
Welcomes the adoption by the International Hydrographic Organization of the World Hydrography Day
, to be celebrated annually on 21 June, with the aim of giving suitable publicity to its work at all level and
of increasing the coverage of hydrographic information on a global basis, and urges all States to
work with that organization to promote safe navigation, especially in the areas of international navigation,
ports and where there are vulnerable or protected marine areas.