WASHINGTON (WUSA9)-- June 7 could be the most memorable day in D.C. sports.

Forty years ago today the Washington Bullets went on to defeat the Seattle SuperSonics in Game 7 of the NBA Finals for their only championship in franchise history.

And now, the Washington Capitals have won their first championship, too.

The Bullets Game 7 win was the first time a road team ever won Game 7 in the NBA Finals.

RELATED: Stanley Cup Game 5 Live Blog: Caps vs. Golden Knights

Not only will fans remember the Bullets winning the NBA championship in 1978 but also the Capitals for winning the Stanley Cup in 2018.

Contact Ashley on Twitter @AshleyHasSpoken