The 90 Degrees East flag is another geographic flag. It can be flown anywhere along the longitude of 90 Degrees East from Central Russia, Eastern China, Bhutan, the eastern wing of India, and Bangladesh.
The squares represent the mathematical symbols for a 90 degree angle. It is at this angle that the advanced study of triangles "Trig" has opened a gateway to the heavens.
The flag is composed of the colours: green, red, yellow, and black.