March is Deaf History Month. Deaf History Month is actually observed from March 13 into April 15. The National Association for the Deaf states,
"This month includes three key moments in American History for the Deaf community: the March 13, 1988 Deaf President Now protest, the April 8, 1864 signing of the Gallaudet University charter by President Abraham Lincoln, and the April 15, 1817 establishment of American School for the Deaf in Hartford, CT as the first permanent public school for the deaf."
We observe this month to celebrate our deaf peers and destigmatize those who are hearing impaired.