1. On April 9, 1865, the Indiana State Senate sent a message of condolence to President Abraham Lincoln's family after his assassination. The message expressed their grief and sympathy for the loss of their beloved president.

2. In 1947, the Indiana University Hoosiers won the National Invitation Tournament (NIT) championship in basketball. This was the first national championship for the Hoosiers, and they went on to win four more NIT championships in 1959, 1979, 1981, and 2008.

3. On April 9, 1981, Indiana Governor Robert D. Orr signed a bill officially designating the peony as the state flower. Indiana is known as the "Peony Capital of the World" and holds an annual Peony Festival in honor of this beautiful flower.

4. In 2005, the Indiana Pacers and Detroit Pistons basketball teams played a game that quickly turned into a brawl now known as the "Malice at the Palace". The fight involved players and even fans and resulted in the suspension of nine players, including the Pacers' Ron Artest (now known as Metta World Peace).

5. On April 9, 2020, Indiana Governor Eric Holcomb announced an extension of the stay-at-home order due to the COVID-19 pandemic. The order had originally been set to expire on April 7, but was extended until April 20 to further slow the spread of the virus.