Talk:Q205892
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Autodescription — calendar date (Q205892)
description: particular day represented within a calendar system
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Allowable range[edit]
Since Wikidata at present attempts to support two calendars, Julian and Gregorian, it is necessary to provide for conversions between the two calendars. What is the earliest allowable date and the date furthest in the future which are allowed? We must know this in order to design conversion algorithms, since such such algorithms only work over a limited range. Jc3s5h (talk) 17:15, 20 January 2015 (UTC)
- The earliest date is obviously at Q1 :) Or do you mean date with day/month? --Infovarius (talk) 11:46, 23 January 2015 (UTC)
- Assuming Infovarius's question is serious, we can observe that when people name only a year, they usually are not concerned about several days at the beginning or end of the year. We can also observe that times in the very distant past or future are not precise enough for the difference between Gregorian and Julian to be important. Thus, I think it would be sufficient to state the earliest month, day, and year which is allowed when the precision >= 11 as defined at DataModel section Dates and time. Also the month, day, and year furthest in the future that is allowed should be stated. Jc3s5h (talk) 18:48, 23 January 2015 (UTC)