The June 19 holiday marks the day in 1865 on which federal troops came to Galveston, Texas, to free enslaved Black people in the state — almost 2½ years after President Abraham Lincoln signed the Emancipation Proclamation, on Jan. 1, 1863.

Because Juneteenth is now classified as a federal holiday, many government offices and services will be closed on Thursday. Here's a breakdown of what's open or closed on Juneteenth. Like with most federal holidays,