That should be "default calendar model". My screw up... ;/ ons. 1. jul. 2015, 20.08 skrev John Erling Blad <jeb...@gmail.com>:
> Wouldn't it be better to use iso8601 as internal format? > > ons. 1. jul. 2015, 18.45 skrev Markus Krötzsch < > mar...@semantic-mediawiki.org>: > >> On 01.07.2015 18:14, Peter F. Patel-Schneider wrote: >> > On 07/01/2015 07:00 AM, Pierpaolo Bernardi wrote: >> >> On Wed, Jul 1, 2015 at 8:17 AM, Markus Krötzsch >> >> <mar...@semantic-mediawiki.org> wrote: >> >>> Dear Pierpaolo, >> >>> >> >>> This thread was only about Julian and Gregorian calendar dates. If and >> >>> how other calendar models should be supported in some future is >> >>> another (potentially big) discussion. As you said, there are many >> >>> issues there. Let's first make sure that we handle the "easy" 99.9% of >> >>> cases correctly before discussing any more complicated options. >> >> >> >> Lydia Pintscher in the starting email explained that there's a model >> for >> >> calendars, and unfortunately this model could be (and has been) >> >> interpreted in two ways (AFAIU). >> >> >> >> My intention was to point out that one of the two interpretations is >> not >> >> sound. This leaves the other one as the only viable one. >> >> >> >> Cheers P. >> > >> > It appears (from the email only---there are no pointers to enduring >> > documentation on the solution that are attached to the relevant classes >> or >> > poperties) that the chosen method is to store dates in both the source >> > calendar and the proleptic Gegorian calendar >> > ( >> https://www.wikidata.org/wiki/Wikidata:Project_chat#calendar_model_screwup >> ). >> > As you point out, this is not a viable solution for calendars whose >> days do >> > not start at the same time as days in the proleptic Gegorian calendar >> > (unless, of course, there is time and location information also >> available). >> >> The Wikidata date implementation intentionally restricts to dates that >> are compatible with the Gregorian calendar. Although the system refers >> to Wikidata item ids of calendar models to denote "Proleptic Gregorian" >> and "Proleptic Julian", the system does not allow users or bots to enter >> arbitrary items as calendar model. >> >> My understanding (and the implementation in WDTK) is that all dates are >> provided in Gregorian calendar with a calendar model that specifies how >> they should be displayed (if possible). The date in the source calendar >> is for convenience and maybe for technical reasons on the side of the >> PHP implementation. At no time should the source calendar date be >> impossible to convert to Gregorian. We have had extensive discussions >> about this point -- Gregorian must remain the main format at all times. >> >> This does not mean that we cannot have more models in the future. There >> is (currently unused) timezone information, which can be used to store >> offsets. Once fully implemented, this might allow exact conversion from >> calendar models that have another start for their days. So maybe this is >> not a case of real incompatibility. However, the timezone support for >> current dates needs to be finished before discussing the next steps into >> more exotic calendars. >> >> Best regards, >> >> Markus >> >> >> _______________________________________________ >> Wikidata mailing list >> Wikidata@lists.wikimedia.org >> https://lists.wikimedia.org/mailman/listinfo/wikidata >> >
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