The Institute of Navigation (ION) logo The Institute of Navigation (ION)
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The Institute of Navigation (ION) is a not-for-profit organization advancing Positioning, Navigation and Timing (PNT). ION's international membership is drawn from many sources including professional navigators, engineers, physicists, mathematicians, astronomers, cartographers, photogrammetrists, meteorologists, educators, geodesists, surveyors, general aviation and airline pilots, mariners and anyone interested in position-determining systems. Corporate members include corporations, civil and military government agencies, private scientific and technical institutions, universities and training academies, and consulting firms.
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Joint Navigation Conference (JNC) 2024
The largest U.S. military Positioning, Navigation and Timing (PNT) conference
6/3/2024 - 6/6/2024
ITM/PTTI 2025
ION International Technical Meeting & The Precise Time and Time Interval Systems and Applications (PTTI)
1/27/2025 - 1/30/2025
Joint Navigation Conference (JNC) 2025
The largest U.S. military Positioning, Navigation and Timing (PNT) conference
6/2/2025 - 6/5/2025
ITM/PTTI 2026
ION International Technical Meeting & The Precise Time and Time Interval Systems and Applications (PTTI)
1/26/2026 - 1/29/2026
Joint Navigation Conference (JNC) 2026
The largest U.S. military Positioning, Navigation and Timing (PNT) conference
Dates: TBD



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