Convert apple time stamp to Unix time

Question

I have a JSON file with a timestamp from an apple device that reads:

"timestamp":584507086.00054193

I want to convert it to other readable formats

Edit answer:

The format is called "Apple Cocoa Core Data timestamp". Added my answer bellow.

Answer 1

Ok I found a solution here:

https://www.epochconverter.com/coredata

This format is called "Apple Cocoa Core Data timestamp" made by apple

You just need to add +978307200 seconds to convert it to Unix