Discussion on question by futurelamb: Ideas for a human convenient, long term date system spanning many trillions of years

Usually, the calendars are based on some physical processes, like Earth revolving around the sun. With the time spans around 10**24 years, the existing physics does not make much sense (since the lifetime of the universe squared, that is a lifetime of universe per every year of lifetime of the universe is still 6 orders of magnitude less than 10^24). In the current scientific world-view, in just around 10^14 years (one ten-billionth of your scale) there will be no stars left. So, unless you explain the physics of your universe, there is little we can do about inventing the calendar.

You are challenging the fundamental concept of precision and hoping to do better than the cardinal numbers. Good luck! You are going to induce fatigue by making your reader parse dates that have 24 orders of magnitude of precision.