Nation What is Juneteenth? Holiday marking Emancipation Proclamation takes on extra importance in 2020 June 13, 2020June 14, 2020 N'dea Yancey-Bragg, USA TODAY Comments Off on What is Juneteenth? Holiday marking Emancipation Proclamation takes on extra importance in 2020 On June 19, 1865, a soldier informed Galveston, Texas, that President Abraham Lincoln two years earlier had freed slaves in "rebel" states.