Anything here? https://www.iso.org/standard/70907.html https://www.iso.org/standard/70908.html https://www.iso.org/news/ref2379.html https://www.iso.org/news/2017/02/Ref2164.html
Or here? https://www.cl.cam.ac.uk/~mgk25/iso-time.html https://webspace.science.uu.nl/~gent0113/calendar/isocalendar.htm https://www.hermetic.ch/cal_stud/formats.htm http://www.probabilityof.com/ISO8601.shtml (warning: adverts!) Best, Bill. On Mon, Dec 13, 2021 at 12:28 PM Elizabeth Mattijsen <l...@dijkmat.nl> wrote: > > > On 13 Dec 2021, at 05:23, rir <rir...@comcast.net> wrote: > > > > > > REPL says: > >> Date.new("2024-02-29").later( :1year); > > 2025-02-28 > > > > Is the following some standard? > > I'm not sure... > > Basically when moving by month / year, it just basically moves that field in > the date, and then checks for validity of the resulting date, and then adapts > (within the given month) to the first legal date. > > Since you're moving by month / year, it felt as the way for the least > surprise. > > > > Liz
