How many Years Months and Days ?

[ggauny@live.fr]

Hi,

You are really very fine, i very learn with you. I think you are teacher in maths or ingenior in informatic. Thanks for the codes, but not yet the WP 34s, damned !
I remember in school the "chronological substraction" about same for hours, minutes and seconds.
-1 +30
-1 +12
EX : 23 02 1951---> 1950 01 23
30 06 1950---> 1949 05 30
----------------
0 7 23

We put only really finished years and months, days are days. If it is impossible to substract, i take on unity on the left and add in the new unity : - 1 year = +12 months, -1 month=30 days. Always 30days, never 28,29or 31, always 30 days.

The chronologiqual substraction is the best and shorter to calculate Delta Y M D.

No matter with leaps or not leaps etc.

May i have your in head felling of this. In some calendars calculations i use this
to be sure of no error.

Your Trully
Gérard