<Tr> <Th> Adopted </Th> <Td> September 16, 1968 </Td> </Tr> <Tr> <Th> Design </Th> <Td> A vertical tricolor of green, white and red with the National Coat of Arms centered on the white band . </Td> </Tr> <Tr> <Td_colspan="2"> Variant flag of Mexico </Td> </Tr> <Tr> <Th> Use </Th> <Td> Naval Jack </Td> </Tr>

When was the flag adopted and what is the story behind the eagle and the serpent