I'm still thinking about real user cases.
As the given ones do not convince me.
It would be more interesting to pay for charges in time critical scenarios,
Like e.g. to avoid high penalties from law through the ability to
buy more time to answer on a court letter or something like this, if you are on vacancy.
Basically to my knowledge, chronologic will be useful in a time-related business model. Such typical would be a digital bundy clock . You could also implement it in a car rental business . A short-time hotel accommodation is a great example . A security alarm at the bank where it uses time-delay vault . Use in financial calculation of Tax, banking interest and time deposits. And many other applications that uses time as an element in calculation.