Year(s) Month(s) Day(s) between 2 dates

[fhub]

(10-29-2015 07:52 AM)Didier Lachieze Wrote:  With your program there are also some discontinuities:
25.012015 to 28.022015 --> 1 month 3 days
25.012015 to 01.032015 --> 1 month 7 days (+4 days!)

That's a very bad example and can in no way be compared to the illogical examples that I've mentioned above:
In your example there's a change in the month of the end date, and so of course there's a 'discontinuity' (I'm sure you also know other discontinuous math functions, don't you?) - I never stated that this DMY function should be continuous.

The last example that I have given shows that with WolframAlpha's method even 3 consecutive (i.e different) dates in the same month give the same result for one single end date, and that's simply nonsense, point!

Franz