What is the "time" field on the date object retrieved from the API?

I have two date fields and I cannot figure out what the value of “time” represents, and my initial searching of docs proved unsuccessful.

I am trying to build a test harness where I generate some fake data, but I have no idea how to mock the "time" field …

Here are example results of actual data from our Knack API calls.

            "field_306": {
                "date": "08/16/2024",
                "date_formatted": "08/16/2024",
                "hours": "12",
                "minutes": "00",
                "am_pm": "AM",
                "unix_timestamp": 1723766400000,
                "iso_timestamp": "2024-08-16T00:00:00.000Z",
                "timestamp": "08/16/2024 12:00 am",
                "time": 720
 "field_1550": {
                "date": "08/06/2024",
                "date_formatted": "08/06/2024",
                "hours": "12",
                "minutes": "00",
                "am_pm": "AM",
                "unix_timestamp": 1722902400000,
                "iso_timestamp": "2024-08-06T00:00:00.000Z",
                "timestamp": "08/06/2024 12:00 am",
                "time": 0

I cannot reason out when time is 720 and when it’s 0

Any idea on what time is or how I might compute it myself?

any help would be appreciated.