How does Codeforces define users' registration time ?

Revision en1, by shihabist, 2016-06-22 23:21:51

It seems like user prithviraj7 registered 46 years ago. :p I want to know how Codeforces scans the time when a user registers. Yeah it's not an important issue but it surprised me when I noticed it first time.

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en1 English shihabist 2016-06-22 23:21:51 285 Initial revision (published)