Is 541.10 weeks as long as The First spacewalk?
It's about 450,000 times as long as The First spacewalk
The length of The First spacewalk is about 0.0012 weeks.
(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 0.0012 weeks. The total mission length was 0.150 weeks.
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