Help talk:Dates

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Julian dates

Could someone explain how one enters a Julian (vs. Gregorian) date in the regular UI for an item? - Jmabel (talk) 00:06, 22 February 2024 (UTC)

I can try to. For example, here You chose date of birth, then push edit. You will see something like a table with his date of birth, accuracy and caledar. Push on "Gregorian calendar" then choose Julian and push on "keep". Ksc~ruwiki (talk) 19:47, 22 February 2024 (UTC)

Unknown birth date at the turn of a century

Hi,

The date of birth of Drest VII (Q2306363) is unknown. From his known date of death, it is possible that he was born somewhere between the (second half of) the 7th century BC and the beginning of the 8th century.

The birth date previously assigned to him was "1st millenium" (with millenium precision), probably because the century is not known. I added the qualifiers earliest date (P1319) and latest date (P1326) with the values 7th and 8th century, respectively, with century precision.

Our local wikipedia currently ignores these qualifiers when importing dates from wikidata (so it still appears as 1st millenium). I was wondering: is it correct to represent this data in the way I used here? Or is there a better alternative?

If what I did here is correct, then I'll ask the template experts in our local wiki to try to also use these qualifiers when they exist. Otherwise, I'd be happy to learn about a better way to represent this info here.

Thanks a lot! E L Yekutiel (talk) 08:10, 26 May 2024 (UTC)

What do you think about adding of this query to examples?

SELECT ?person ?personLabel ?birthDate ?earliestDate ?latestDate WHERE {
  ?person wdt:P31 wd:Q5.
  ?person wdt:P27 wd:Q170072.
  ?person p:P569 ?birthStatement.
  ?birthStatement ps:P569 ?birthDate.
  OPTIONAL { ?birthStatement pq:P1319 ?earliestDate. }
  OPTIONAL { ?birthStatement pq:P1326 ?latestDate. }
  FILTER((YEAR(?birthDate) = 1605) ||
         (?earliestDate <= "1605-01-01T00:00:00Z"^^xsd:dateTime && ?latestDate >= "1605-12-31T23:59:59Z"^^xsd:dateTime))
  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
}
ORDER BY ?birthDate

Try it!

as example to query date of birth in case of earliest date (P1319) and latest date (P1326) qualifiers. Skim (talk) 17:29, 8 July 2024 (UTC)