The Scottish Flag, also known as the Saltire, features a white diagonal cross on a blue background. This design represents the cross of Saint Andrew, the patron saint of Scotland, who was crucified on a diagonal cross. The flag's colors are derived from the blue skies and white clouds of Scotland. The Saltire is one of the oldest flags in the world, with its origins dating back to the 9th century. It was officially adopted as the national flag of Scotland in the 15th century. The flag is a symbol of Scottish identity and pride, often displayed during national celebrations and events.