Number of digits in Epoch time

Question

I am working on a machine that has a specific code that sets the time when I set the password. The set time is the time, but it has 13 digits, and when I wrote a simple program to get the time of an era and ran it on my personal computer using linux, it returns an era time that has 10 digits. Does anyone know what the extra three numbers mean?

Thanks in advance

Answer 1

Probably seconds versus milliseconds.

You will have to consult specific documentation.