> So 'mm' means month or day depending on the context. Thus:
> 1984-04-04/06 the 4th through 6th of April 1984.
This would be quite problematic, because our L2Interval may contain an
L2Date (not only ISO 8601 dates). Let's consider:
How long would such an interval be? Three weeks? A little more than seven
Of course, we could allow a construction like
but in this case, we should need to be quite clear about its
interpretation. We could also stick with
even when both the year and the month is the same on both side, but this
could be problematic too. Let's consider
which obviously is two weeks long whereas
may be two weeks or several years long.