Shades for Migraine is observed internationally on June 21 to raise awareness for the one billion individuals living with migraine disease. Participants are encouraged to wear sunglasses, even indoors, to symbolize the light sensitivity experienced by many migraine sufferers. The event promotes education about the condition and advocates for better understanding and treatment options. Individuals can engage by sharing their experiences on social media using the hashtag #ShadesForMigraine, while organizations like the Association of Migraine Disorders and the Migraine Research Foundation support fundraising and awareness initiatives. The observance emphasizes the importance of educating the public about migraines and encourages contributions to research and patient services.