East African shilling in 1952, the birr, which was already in use in Ethiopia, was adopted in Eritrea. A new version of the currency is proposed by the East African Community, which consists of Kenya, Tanzania, Uganda, Rwanda, Burundi, and South Sudan. It had been proposed that the Second East African shilling be introduced into circulation in 2012, but the target was not met. A second target date was set to 2015, but also not met. The third target date is 2024. In 1921, notes were issued by the East African Currency Board in denominations of 5, 10, 20, 100, 200, 1,000 and
Equator is commonly modeled as a sphere flattened 0.336% along its axis. This makes the Equator 0.16% longer than a meridian (a great circle passing through the two poles). The IUGG standard meridian is, to the nearest millimetre, , one arc-minute of which is , explaining the SI standardization of the nautical mile as , more than less than the geographical mile. The sea-level surface of the Earth (the geoid) is irregular, so the actual length of the Equator is not so easy to determine. "Aviation Week and Space Technology" on 9 October 1961 reported that measurements using the Transit IV-A