Why does datetime.fromtimestamp give wrong result?

Question

Python

Faced a strange problem

datetime.fromtimestamp(1535630541000).strftime("%d.%m.%Y")

It gives out 03/12/50632, although the correct value is 08/30/2018
I checked the time here:
https://www.epochconverter.com
What could be the problem?

Answer 1

Python and JS have a different concept of timestamps

datetime.fromtimestamp(1535630541000 / 1000).strftime("%d.%m.%Y")
'30.08.2018'