how to create datetime from a negative epoch in Python

Question

First timer on StackExchange.

I am working with ArcGIS Server and Python. While trying to execute a query using the REST endpoint to a map service, I am getting the

Answer 1

if timestamp < 0:
    return datetime(1970, 1, 1) + timedelta(seconds=timestamp)
else:
    return datetime.utcfromtimestamp(timestamp)