1. In 1893, the National Geographic Society was founded in Washington, D.C. This society is dedicated to promoting geography, environmental science, and the study of world cultures.

2. On January 5, 1957, Washington, D.C. was hit by a major snowstorm that dumped over 10 inches of snow on the city. The storm caused widespread power outages and disrupted transportation throughout the region.

3. In 1969, the Washington Redskins defeated the Cleveland Browns in the NFL Championship Game on January 5. The Redskins went on to play in Super Bowl III, but lost to the New York Jets.

4. On January 5, 1993, the 103rd Congress began its first session in Washington, D.C. This was an important moment in American politics, as the Congress had just sworn in a record number of women (47) and minorities (23).

5. In 2015, Mayor Muriel Bowser signed a bill legalizing marijuana in Washington, D.C. on January 5. The bill allowed residents of the city to possess up to two ounces of marijuana and grow up to six plants at home. However, the law was later blocked by Congress and the possession and sale of marijuana remains illegal in the District of Columbia.