Tony Finch wrote:
The IS should clarify that a day is [0:0, 24:0), not [0:0, 24:0]
and everything should be fine.
Its definition of a calendar day is consistent with its definition of a
time interval. It doesn't make any distinction between including and
excluding the end instants. And I don't think it would be sensible to do
so: it would clutter the time interval notation with no clear benefit.
In Japan, at the beginning of 2004, copyright protection period
of movies, copyright of which were unexpired at that time, was
extended by 20 years.
But, copyright of some movies expired at the end of 2003.
There were disputes in courts and the supreme court judged
that copyright of the movies expired.
Masataka Ohta