Convert buffer to time and compare with current time

Hi.

Among other data, I get the date and time from a buffer and I need to compare it with the current date.

But even simulating the current date, when I do the conversion there is a very large difference between the date received via buffer and the current date, approximately 125 days

What am I doing wrong?
How can I do this using function?

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If you mean the number underlined, that is 3 hours. It is in milliseconds which is standard for javascript dates. I suspect your time zone is 3 hours from UTC.

I suspected it was something stupid.