1. In 1927, the first national museum in Washington D.C., the Smithsonian Institution's Museum of Natural History, was opened to the public on January 7th. It showcases a vast collection of artifacts and specimens from different parts of the world.

2. The Washington Redskins, now known as the Washington Football Team, played their first NFL championship game on January 7, 1940. They lost to the Chicago Bears 73-0, which remains the most lopsided defeat in NFL history.

3. January 7, 1998, marked the opening of the MCI Center, now known as the Capital One Arena, in Washington D.C. It is a state-of-the-art arena that hosts various sporting events, concerts, and shows.

4. In 2020, a rare tornado touched down in Maryland, not far from Washington D.C., on January 7th. The EF1 tornado caused damage in some neighborhoods, including uprooting trees and damaging homes, but there were no reported casualties.

5. On January 7, 2019, the Washington Metro rail system experienced a total shutdown due to a massive snowstorm that hit the region. The transport system serves the District of Columbia and parts of Virginia and Maryland, and its shutdown resulted in chaos and inconvenience for thousands of commuters.