I mean the year Nigeria flag was design?

The Nigerian flag was designed by Taiwo Akinkunmi, a 23-year-old student at the Nigerian College of Arts, Science, and Technology in Ibadan. He won a competition to design the flag that was held in 1959, the year before Nigeria became independent from the United Kingdom.

The Nigerian flag is a vertical tricolor of green, white, and green. The green stripes represent the country's natural resources, while the white stripe represents peace and unity.