World Narcolepsy Day is observed worldwide every September 22 to promote understanding of narcolepsy, a chronic neurological disorder that disrupts sleep-wake cycles and can lead to excessive daytime sleepiness and dangerous accidents. Established in 2019 by twenty-four patient advocacy organizations, the day aims to unite the international narcolepsy community, reduce stigma, and support millions of patients. Common symptoms of narcolepsy include involuntary sleep episodes and cataplexy, which affects about 70% of patients. While there is no cure, management strategies include lifestyle changes and medications. Observers can participate by educating themselves, attending events organized by advocacy groups, donating to research organizations, and sharing their experiences on social media using the hashtag #WorldNarcolepsyDay.