2003-06-26: Lawrence v. Texas
ruling, in which "the Court struck down the sodomy law in Texas and, by extension, invalidated sodomy laws in 13 other states, making same-sex sexual activity legal in every U.S. state and territory."
2013-06-26: United States v. Windsor
ruling, in which the Court "held that restricting U.S. federal interpretation of 'marriage' and 'spouse' to apply only to heterosexual unions, by Section 3 of the Defense of Marriage Act (DOMA), is unconstitutional"
2015-06-26: today :) (Obergefell v. Hodges
(Stonewall riots began June 28th, which puts Pride around now. Just a few days off!)