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Is 18 workweeks as long as The First spaceflight (Sputnik)?

It's about as long as The First spaceflight (Sputnik)
The length of The First spaceflight (Sputnik) is about 18 workweeks.
(a.k.a. Sputnik 1, a.k.a. Спутник-1, a.k.a. "Satellite-1", a.k.a. Простейший Спутник-1) (1957) (total time in orbit)
Launched from Kazakhstan in 1957, Sputnik was the first artificial satellite placed into orbit around Earth, where it remained for 18 workweeks. During its voyage, it traveled about 70,000,000 km (43,495,983.46 mi), completing an orbit of the planet every 0.013 workweeks.
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