Is 520.730 shakes as long as The First spacewalk?
It's about 0.000000007 times as long as The First spacewalk
The length of The First spacewalk is about 72,000,000,000 shakes.
(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 72,000,000,000 shakes. The total mission length was 9,400,000,000,000 shakes.
There's more! See other comparisons to 520.730 shakes...