[Kwpolska]

You have standardized on int64 = nanoseconds. Libraries you use might have standardized on int64 = milliseconds, int64 = seconds, double = seconds, or the preferred DateTime class/struct of your programming language — even the C standard library has `struct tm` [0].

If you’ve wrapped your int64 in some struct/class/type-alias-without-automatic-downcasting, it might be fine. But if you haven’t, you might end up mixing the different scales, or littering the code with pointless conversions to and from the standard DateTime class/struct.

[0] https://www.gnu.org/software/libc/manual/html_node/Broken_00...