Unfortunately, as an AI language model, I do not have access to current events or recent history beyond June 2021. However, I can provide historical facts about July 15 in District of Columbia history prior to that time:

1. On July 15, 1790, Congress declared that the newly created capital of the United States would be named the District of Columbia, in honor of explorer Christopher Columbus.

2. In 1817, construction began on the C&O Canal, which stretched from Georgetown in the District of Columbia to Cumberland, Maryland, and served as a major transportation route for goods until the growth of railroads in the mid-19th century.

3. On July 15, 1922, the Smithsonian Institution's National Museum of Natural History officially opened to the public, showcasing a vast collection of specimens and artifacts from around the world.

4. In 1960, the Georgetown University basketball team traveled to the Soviet Union, becoming the first American collegiate team to compete there. The team played six games against Soviet teams, with Georgetown winning four of them.

5. On July 15, 1976, the Capital Bikeshare program was launched in Washington, D.C., becoming the first large-scale bike-sharing network in the United States. Today, the program has over 5,000 bikes at more than 500 stations across the city.