It's true, the defaults are quite strict.
As for the "hours" max interval, this is the result of a design decision in Go's time duration library, dealing with the quirks of our calendaring system.
As for the "hours" max interval, this is the result of a design decision in Go's time duration library, dealing with the quirks of our calendaring system.
(This is ignoring leap seconds, since the trend is to smear those rather than surface them to userspace.)