All I can gather, is that the number furthest to the right seems to be 100ms, so the second digit from the right is counting seconds. When those 3 digits reach 000, they've counted 100 seconds.

I see 19567288000 currently. If I remove the last zero, that number should be in seconds. So 1956728800 seconds = ~62 years. The year 2023 - 62yrs = 1961.

Maybe it's counting the number of seconds since a date in 1961? Unix time uses 1970-01-01 but not sure what significance 1961 has.