Current Affairs PDF

World Hydrography Day 2021 – 21 June

AffairsCloud YouTube Channel - Click Here

AffairsCloud APP Click Here

World Hydrography Day is annually observed across the globe on 21st June to highlight the importance of hydrography and its relevance.
World Hydrography Day annually celebrates the works and contribution of the Hydrographers.
The year 2021 also marks the 100th anniversary of the formation of the International Hydrographic Organization (IHO).
The theme of World Hydrography Day 2021 is “One Hundred Years Of International Cooperation In Hydrography”.


i.In 2005, World Hydrography Day was approved and implemented by the International Hydrographic Organization (IHO) as an annual observance.

ii.The United Nations General Assembly(UNGA) adopted the resolution A/RES/60/30 on “Ocean and the Law of the Sea” and welcomed the adoption of the World Hydrography Day by the IHO.

Why June 21?

June 21 marks the anniversary of the founding of the International Hydrographic Organization in 1921.

  • The IHO came into existence as the International Hydrographic Bureau and in 1970 it was renamed as International Hydrographic Organization (IHO).


Hydrography is a branch of applied science that deals with the measurement and description of the features of oceans, seas, coastal areas, lakes and rivers and the prediction of their change over time.

About International Hydrographic Organization (IHO):

Chair of the IHO Council– Dr. Geneviève Béchard (Canada)
Headquarters- Monaco
Established in 1921