Here are five interesting facts about March 30 in District of Columbia History:

1. In 1870, the 15th amendment to the U.S. Constitution was ratified, which stated that citizens could not be denied the right to vote based on their race, color, or previous condition of servitude. This was a significant milestone in the ongoing struggle for civil rights in the United States.

2. In 1940, the Cherry Blossom Festival was cancelled due to the threat of war in Europe. The festival had begun in 1935 as a way to celebrate the gift of cherry blossom trees from Japan to the United States.

3. In 1981, President Ronald Reagan was shot and wounded by John Hinckley Jr. outside the Washington Hilton Hotel. Reagan survived the assassination attempt and went on to serve another four years as president.

4. In 1995, the Washington Capitals set an NHL record for the longest winning streak on home ice, winning their 28th consecutive home game at the Capital Centre in Landover, Maryland.

5. In 2010, the Affordable Care Act was signed into law by President Barack Obama. The legislation aimed to increase access to healthcare for millions of Americans who were previously uninsured or underinsured.