Spoiler Alert: Test yourself before reading this. The flags are listed below in the order of their age. The phrase "still in use" is critical.
1. The modern Denmark Flag was formally adopted in 1625 but in actual use by ca. 1219. It is widely considered to be the oldest existing national flag still in use in the world. Officially, the flag is known as Dannebrog. Did you know the Dannebrog was banned by the government for public use in 1834, but so many Danes disobeyed the law and continued to openly display the flag, the ban was officially lifted in 1854? Power to the people.
2. Austria's flag was documented in use by 1230, but only formally adopted in 1918. The red-white-red tricolored flag uses the colors of the medieval Babenberg dynasty. The House of Babenberg was a noble dynasty of Austrian Dukes and Margraves.
3. Latvia's red and white flag dates back to 1279 but only was formally adopted in 1918 with the collapse of Imperial Germany and was then used until the Soviet occupation of Latvia in 1940. It was re-adopted in 1990 following the collapse of the USSR.
4. Many like to claim that the Scottish saltire is the oldest flag, dating back to AD 832. According to legend, the Scottish king Angus Mac Fergus prayed for a victory against the invading Angles. On the morning of the battle, clouds appeared forming a white diagonal cross against the blue sky like the one that Saint Andrew was crucified on. They consider this the actual date that the Scottish first adopted the white saltire. There is no evidence to support this early date, but the saltire was definitely in use by 1286.
5. While the current national flag of Norway has been in use since 1821, the Kongeflagget, or Royal Standard of Norway, dates back to 1318 (possibly earlier, around 1280). It was formally adopted in 1905.
6. The Albanian flag, or Flamuri Kombëtar, with its black double-headed eagle, dates back to the Middle Ages—and earlier, to the banner of the Byzantine Empire. Its first use in Albania was by the noble families about 1443 (possibly earlier). It was formally adopted in 1912. During the 1990s, the Albanian flag was used as the symbol of the unofficial Republic of Kosova, a self-declared state in Kosovo.
7. The white cross on the red flag of Switzerland has been in use since 1470, but it was formally adopted in 1889. The flag of Switzerland is one of only two square sovereign state flags in the world, the other is Vatican City's. Although officially the flag is square, Swiss ships, boats, and non-government bodies often fly a rectangular version. It is interesting that the Swiss founder of the Red Cross, Henry Dunant, used a direct inverse of the Swiss national flag as the Red Cross Flag.
8. Although formally adopted in 1906, the Swedish flag dates back to 1562. According to legend, the golden cross against a blue background was first used by King Eric IX, who supposedly saw a golden cross appear in the sky as he landed in Finland during the First Swedish Crusade in 1157. The first legal description of the flag with a yellow cross on a blue background dates to 1562, and before that apparently the cross was white. The use of the Nordic cross design isn't surprising when one considers that both Norway and Denmark were under one rule between 1524 -1533 and 1537-1814.
9. The flag of the Netherlands dates back to 1572 when used by William Prince of Orange in the Dutch Revolt against King Philip II of Spain. This tricolor flag was originally orange, white, and blue, but the top orange strip was changed to red sometime after 1630. It is considered the oldest tricolor in continuous use in the world. Dutch sports enthusiasts have embraced the use of the older orange, white, and blue variant at sporting events and the Olympics.
10. The Japanese white flag with red sun disk is, of course, one of the most recognizable national flags being used today and it ends out our little quiz of the ten oldest national flags. Since it has already been discussed, not much has been added here. How'd you do on the quiz?