The national flag of Indonesia, which is known as Sang Merah Putih "The Red and White" in Indonesian, is based on the flag of the 13th century Majapahit Empire. The flag itself was introduced and hoisted in public at the Indonesian Independence Day ceremony, on August 17, 1945. The design of the flag is simple with two equal horizontal bands, red (top) and white (bottom). Red represents bravery, while white represents the spiritual element.