- 1776 - The Maryland Constitutional Convention agrees to a proposal introduced by Dr. Thomas Sprigg Wootton to divide Frederick County into three smaller units, thus creating Washington County and Montgomery County.
- 1995 - Baltimore Oriole Cal Ripken, Jr. surpasses Lou Gehrig's Major League Baseball record of consecutive games played with 2,131.
Deaths
- 2012 - Art Modell, Baltimore Ravens founder and owner