World Autism Awareness Day - World Autism Awareness Day is an internationally recognized day annually on 2 April, encouraging Member States of the United Nations to take measures to raise awareness about autistic individuals throughout the world.
Emancipation Day - On April 16, 1862, President Abraham Lincoln signed the District of Columbia Compensated Emancipation Act, which ended slavery in Washington, D.C. and freed over 3,000 enslaved individuals.
