Why is Memorial Day in the spring?

(NEXSTAR) — Though Memorial Day may seem randomly placed on the calendar, there's a reason it always falls on the last Monday of May.To understand, you need to go back roughly 155 years.
It was 1868, three years after the Civil War had ended. Major General John A. Logan, the leader of the Grand Army of the Republic (an organization of Union veterans), declared that May 30 should serve as Decoration Day. On that day, Logan wanted Americans to place flowers on the graves of the war dead, acc