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Is 288 minutes as long as The First spacewalk?

It's about twenty times as long as The First spacewalk
The length of The First spacewalk is about 12 minutes.
(1965) (Alexi Lenovo, a.k.a. Алексе́й Архи́пович Лео́нов)
On March 18th, 1965, during the Voskhod 2 Soviet space mission, cosmonaut Alexey Arkhipovich Leonov conducted the first human spacewalk, which lasted 12 minutes. The total mission length was 1,600 minutes.
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