World Hydrography Day
Celebrated on 21 June, World Hydrography Day is designed to raise awareness about hydrography and how it plays a role in improved knowledge of the seas and oceans.
The theme this year is:
Transforming how ocean data is shared"
For further information on World Hydrography Day, please visit World Hydrography Day (iho.int)
Events
On Thursday 18 June 2025, the Australasian Hydrographic Society (AHS) celebrated World Hydrography Day 2026 at Novotel Wollongong Northbeach.
This annual event brought together hydrographic professionals, industry leaders, and emerging practitioners for a day of knowledge sharing, professional development, and networking.
For further information, please visit Event - Australasian Hydrographic Society - World Hydrography Day 2026.
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