International Stuttering Awareness Day (ISAD) is observed annually on October 22. It is organized by the International Stuttering Association, International Fluency Association, and European League of Stuttering Association.
Fechner Day is an annual informal observance celebrated by psychophysicists across the world. It is dedicated to the German philosopher, physicist, and psychologist Gustav Fechner who is credited with founding psychophysics, the study of the relation between physical stimuli and sensations.
Caps Lock Day (stylized as CAPS LOCK DAY) is an unofficial holiday celebrated twice a year, on June 28 and October 22. On this day, you can type everything in all caps without being afraid to appear rude.