Hello @Chunky_Plumpy! welcome to the community.
“timestamp”: “1601590491”,
This is of type Epoch, also known as Unix timestamps, is the number of seconds (NOT milliseconds) that have elapsed since January 1, 1970 at 00:00:00 GMT.
In MongoDB, the Date objects are stored as a signed 64-bit integer representing the number of milliseconds since the Unix epoch (Jan 1, 1970).
Then, there are 1000 milliseconds in a second.