The national flag of Nepal is the only non-rectangular national flag. The flag of the U.S. state of Ohio (see Flag of Ohio) is also non-rectangular. The flag is a simplified combination of two single pennants from different branches of the previous rulers, the Rana dynasty.
The flag was adopted, with the formation of a new constitutional government, on December 16, 1962. The individual pennants had been used for the last two centuries and the double pennant since the 19th century. The blue border denotes peace and the crimson color is Nepal's national color. The two royal symbols are now declared to represent the hope that Nepal will last as long as the moon and the sun.