It’s poetic coincidence that the biggest U.S. Supreme Court rulings in the LGBT civil rights movement bore the date June 26, said high court litigator Paul Smith, who argued the landmark case that laid the foundation for same-sex marriage equality.

In Lawrence v. Texas, John Lawrence and Tyron Garner were arrested in Lawrence’s Houston home for alleged “deviant sexual intercourse” that violated the Texas criminal sodomy statute. Fifteen years ago on June 26, 2003, the high court ruled in Lawrence that criminal sodomy statutes were unconstitutional. It paved the way for the high court on the same date—June 26—nine years later in Windsor v. United States to strike down the Defense of Marriage Act’s definitions of “marriage” and “spouse” as limited to opposite-sex couples. And in 2015, again on June 26, the Supreme Court legalized same-sex marriage nationwide in Obergefell v. Hodges.