1. Tax Day: April 15 is widely recognized as Tax Day, the deadline for filing income tax returns in the United States. Delaware residents, like those in other states, must file state and federal tax returns by this date each year.

2. Caesar Rodney’s Ride: On April 15, 1777, Delaware statesman and military leader Caesar Rodney completed a 70-mile horseback ride from his home in Kent County to Philadelphia, Pennsylvania, galloping through a thunderstorm to cast the deciding vote in favor of American independence in the Continental Congress.

3. Delaware Day: In 1933, Delaware established “Delaware Day” as an annual holiday celebrated on December 7th to commemorate the state’s ratification of the Constitution, making it the first state to enter the Union. However, in 2009 the official date of Delaware Day was moved to April 15th to coincide with Tax Day.

4. The Wilmington Insurrection: On April 15, 1898, African American residents of Wilmington, Delaware, were victims of a violent insurrection orchestrated by members of the local Democratic Party. The coup d’etat targeted the city’s biracial government and resulted in the deaths of an unknown number of black residents.

5. The Coast Guard Cutter Mohawk: On April 15, 2012, the Coast Guard Cutter Mohawk was deliberately sunk off the coast of Delaware to create an artificial reef to promote marine life and diving tourism. The 165-foot vessel had served in the Coast Guard for over 50 years before being decommissioned and repurposed.