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The Nautical Almanac is Finally Produced by an Electronic Computer (1959)

Having been computed by human computers since 1767, in 1959 the Nautical Almanac was finally produced by an electronic computer.

"The computation of the data for the almanacs involved a considerable amount of effort. As late as the mid-20th century, HMNAO employed a small army of human computers to carry out this work. They used the latest technology available at the time: logarithm tables, mechanical calculating machines and electro-mechanical calculating machines. In 1959 the Office obtained its own electronic computer, making it the first part of the RGO to use this emerging technology."