A time::clock object is a twenty-four hour clock with nanosecond precision and wrap-around. it is a clock only; it has absolutely no concept of dates. vagaries of date/time such as leap seconds and daylight savings time are unsupported.

when a time::clock object hits 23:59:59.999999999 and at least one more nanosecond is added, it will wrap around to 00:00:00.000000000. this works in reverse when time is subtracted.

time::clock objects automatically stringify to a user-definable format.