Aviation Day 2025. Every five years, coinciding with icao anniversaries (2014/2019/2025/2029/etc.), the icao council establishes a special anniversary theme for international civil aviation day. * registration open until 3/16/24 at 12:00 pm (est)
Feb 12, 2025 | 12:57 pm. National aviation day 2025 is on monday, august 19, celebrating in the united states the history and development of aviation.