I made a universal timeline[0] that scales from milliseconds to "all of time", and for various reasons I store the time as years BC/AD in JS floats (64 bits). I

I made a universal timeline[0] that scales from milliseconds to "all of time", and for various reasons I store the time as years BC/AD in JS floats (64 bits). It goes to 2^1024, or approximately 1.7977e+308 years. Not the most efficient, since all the numbers < -13.8e9 are wasted, but it means the raw number matches how we commonly talk about deep time. (Historical dates are stored as an ISO-8601 string and converted). 0. https://timepasses.net https://timepasses.net