NominalDiffTime -is:exact package:netwire
This is a length of time, as measured by UTC. Conversion functions
will treat it as seconds. It has a precision of 10^-12 s. It ignores
leap-seconds, so it's not necessarily a fixed amount of clock time.
For instance, 23:00 UTC + 2 hours of NominalDiffTime = 01:00 UTC (+ 1
day), regardless of whether a leap-second intervened.