When was the Confederate flag put on top of the capital building in South Carolina?

On April 12, Confederate troops, following orders from the Davis and his Secretary of War, fired upon the federal troops occupying Fort Sumter in Charleston, South Carolina, forcing their surrender. Following the Battle of Fort Sumter, Lincoln called for all states in the Union to send troops to recapture Sumter and other forts, defend the capital (Washington, D.C.), and preserve the Union. Most Northerners believed that a quick victory for the Union would crush the rebellion, and so Lincoln only called for volunteers for 90 days of duty. Lincoln's call for troops resulted in four more states voting to secede. Virginia, Arkansas, Tennessee, and North Carolina joined the Confederacy for a total of 11. Once Virginia joined the Confederate States, the Confederate capital was moved from Montgomery, Alabama to Richmond, Virginia.