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To make time inhuman and rational, we must normalize it. For any given unit of time, $0.0$ represents the start and $1.0$ represents the completion of that cycle. Times within that unit fall into the range $[0.0, 1.0]$, which is $0.0$ to $1.0$ inclusive.
Times within or between days (times and time periods that would be expressed in seconds, minutes, or hours using SI units) are expressed as bare fractions of a day, e.g. $0.2$.
Day values are calculated by taking the current time (hours, minutes, seconds) and dividing by total milliseconds in a day $(\sim8640000)$:
Times within and between years (times and time periods that would be expressed as weeks, months, or years) are expressed as fractions followed by a $\circlearrowleft$ symbol, e.g. $0.7732\circlearrowleft$.
Year values are calculated by taking the days elapsed since January 1st divided by 365.25 (accounting for leap years):
Human lives are expressed relative to an average human life expectency of 76.0 years throughout history.
They are recorded differently for living and deceased individuals.
The age of living individuals is represented as a fraction preceded by a large hollow bullet symbol:
e.g.:
For deceased individuals, this duration maps into the unit time of their lifespan:
This means that the dates of events in a deceased individual’s life can be scaled to their normal range.
To both indicate that someone's life is complete and to record how long that life was, the lifespan of deceased individuals is represented as $1.0$, followed by a large filled bullet symbol, followed by their age at death as a fraction relative to average lifespan as before, e.g.:
Where bullet characters are unavailable, the at sign "@" may be used instead.
Times relative to planned events can be expressed in terms of their planned duration.
e.g. for a meeting:
Normal time makes it easy to compare progress across different time scales by removing artificial human concepts of time. It creates a unified way to express completion of any cyclic or linear time period.
Dehumanizing time in this way has the counterintuitive effect of making it more recognizably natural and intuitive for human beings to express and understime durations.
Furthermore it respects that each human life is complete unto itself, removing the implicit judgment of longer lives being "more complete". It creates a clear distinction between lives that are "in progress" and "complete" without obfuscating the progression of those lives. And it recognizes that all completed lives are equally whole.