Re: 2017-03-06- UTC, TImeZone, DayLight Saving Shifts, Enconding

> On Mar 19, 2017, at 9:09 AM, Walter H. <Walter.H@mathemainzel.info> wrote:
> 
>> if you interpret 'end' as the time when something ceases, not the last instant inside the interval.
> the end of something is the opposite from the beginning ...
> when the beginning is included, than the end has also been included ...
> 
> we are talking of intervals like
> ]begin;end[
> or
> [begin;end]
> and never of intervals like
> [begin;end[
> or
> ]begin;end]

I used precise notation from interval mathematics, where square brackets mean inclusive, and round parentheses mean exclusive.

> as I said before: talk of sophisticated after having understood the basics ...

These issues cannot be coherently understood using colloquial terms.

Monday-Friday typically means [Monday,Friday], but 2pm-3pm typically means [2pm,3pm).

there is no standard across all applications that requires displaying intervals using any particular convention.

And application display is out of scope here.

Joe

Received on Sunday, 19 March 2017 17:57:08 UTC