Community Wishlist Survey 2021/Wikidata/Time and date handling improvements

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Time and date handling improvements

Problem: Dealing with time and dates on Wikidata is a long-standing problem, with several aspects that usually are brought forward to discuss. This is an attempt to summarise the most pressing aspects, by selecting the relevant Phabricator tickets and checking all previous Community wishlist requests:

allowing time values more precise than "day" (task T57755) - this is a recurring request that dates back to October 15, 2013 to have a potential time precision up to seconds, and not limited just to days;
supporting non-Gregorian/Julian calendars (task T252627) - this is another non-trivial request for handling sources that express dates and occurrences in calendars other than Gregorian and Julian;
fixing annoying problems with displaying date values (task T63958 and task T95553) – pretty self-explanatory, mostly related to a better localisation of values, that nonetheless is needed.

These are the main three aspects, though many other things might be needed to be looked at. Our common hope is to find finally someone who can tackle those problems.

Who would benefit: primarily Wikidata contributors, but also Wikidata re-users at large
Proposed solution: add functionalities and fix current problems in this field
More comments:
Phabricator tickets:
- task T57755 – Allow time values more precise than day on Wikidata
- task T63958 – Use existing $dateFormats to format dates on Wikidata
- task T95553 – Full stop in messages such as Wikibase-time-precision-century is incorrect in English
- task T252627 – Support for additional calendar models
Proposer: Sannita - not just another it.wiki sysop 13:56, 18 November 2020 (UTC)[reply]

Discussion

Long standing missing feature, thanks for keeping it alive also this year --Sabas88 (talk) 14:52, 18 November 2020 (UTC)[reply]
Much needed especially the sub-day precision. We have Lua code that solves task T95553 issue (see Module:ISOdate (Q20962109)) so it should not be hard to fix. --Jarekt (talk) 22:14, 20 November 2020 (UTC)[reply]
Improvements would be appreciated. Previous related proposals: Correct date format on Wikidata (2017), Have calendar converter for input dates (2017), Stop making false claims about dates (2017), Date handling improvements – additional precision and correction of translations in interface (2019). Jc86035 (talk) 17:55, 21 November 2020 (UTC)[reply]
As described above, there are long-standing problems with time/date in Wikidata that result in incorrect data being displayed for users. It’s really past time we resolved this. - PKM (talk) 21:51, 28 November 2020 (UTC)[reply]
With the structured data on Commons this is highly needed, because the time when a photo was takes is very important. --GPSLeo (talk) 14:06, 7 December 2020 (UTC)[reply]

Voting

Support আফতাবুজ্জামান (talk) 19:15, 8 December 2020 (UTC)[reply]
Support Matěj Suchánek (talk) 19:24, 8 December 2020 (UTC)[reply]
Support Supporting more calendar types +1 マイキ (talk) 19:35, 8 December 2020 (UTC)[reply]
Support Imz (talk) 20:13, 8 December 2020 (UTC)[reply]
Support --Sabas88 (talk) 20:30, 8 December 2020 (UTC)[reply]
Support We need this! Ferdi2005 _[Mail] 20:44, 8 December 2020 (UTC)[reply]
Support Stryn (talk) 20:52, 8 December 2020 (UTC)[reply]
Support Berdajeno (talk) 20:53, 8 December 2020 (UTC)[reply]
Support Epìdosis 21:37, 8 December 2020 (UTC)[reply]
Support Nashona (talk) 22:00, 8 December 2020 (UTC)[reply]
Support Nw520 (talk) 22:54, 8 December 2020 (UTC)[reply]
Support Precision, precision and more precision pls!! josecurioso ❯❯❯ Tell me! 23:00, 8 December 2020 (UTC)[reply]
Support Frettie (talk) 23:07, 8 December 2020 (UTC)[reply]
Support Mahir256 (talk) 01:42, 9 December 2020 (UTC)[reply]
Support Hanif Al Husaini (talk) 01:47, 9 December 2020 (UTC)[reply]
Support Silver hr (talk) 02:44, 9 December 2020 (UTC)[reply]
Support NMaia (talk) 03:06, 9 December 2020 (UTC)[reply]
Support Alkari (talk) 03:25, 9 December 2020 (UTC)[reply]
Support —The Editor's Apprentice (talk) 05:42, 9 December 2020 (UTC)[reply]
Support MisterSynergy (talk) 09:20, 9 December 2020 (UTC)[reply]
Support Much needed! Wallacegromit1 (talk) 10:32, 9 December 2020 (UTC)[reply]
Support Kpjas (talk) 11:17, 9 December 2020 (UTC)[reply]
Support ‐‐1997kB (talk) 12:55, 9 December 2020 (UTC)[reply]
Support Sgd. —Hasley 13:04, 9 December 2020 (UTC)[reply]
Support Kaybeesquared (talk) 14:40, 9 December 2020 (UTC)[reply]
Support Mannivu · ✉ 15:06, 9 December 2020 (UTC)[reply]
Support Long-standing issue that should be given some developer attention! ArthurPSmith (talk) 15:58, 9 December 2020 (UTC)[reply]
Support Nehaoua (talk) 16:46, 9 December 2020 (UTC)[reply]
Support {{u|Sdkb}} ^talk 18:27, 9 December 2020 (UTC)[reply]
Support — putnik 19:27, 9 December 2020 (UTC)[reply]
Support JAn Dudík (talk) 20:29, 9 December 2020 (UTC)[reply]
Support Andy Mabbett (Pigsonthewing); Talk to Andy; Andy's edits 20:40, 9 December 2020 (UTC)[reply]
Support Moebeus (talk) 21:55, 9 December 2020 (UTC)[reply]
Support Jklamo (talk) 00:23, 10 December 2020 (UTC)[reply]
Support - Darwin ^Ahoy! 02:00, 10 December 2020 (UTC)[reply]
Support Afaz (talk) 05:21, 10 December 2020 (UTC)[reply]
Support Kizule (talk) 06:06, 10 December 2020 (UTC)[reply]
Support - PKM (talk) 07:48, 10 December 2020 (UTC)[reply]
Support - yona B. (D) 08:21, 10 December 2020 (UTC)[reply]
Support Mbkv717 (talk) 09:06, 10 December 2020 (UTC)[reply]
Support Susanna Ånäs (Susannaanas) (talk) 11:01, 10 December 2020 (UTC)[reply]
Support Ayack (talk) 16:28, 10 December 2020 (UTC)[reply]
Support Libcub (talk) 20:53, 10 December 2020 (UTC)[reply]
Support Higa4 (talk) 04:55, 11 December 2020 (UTC)[reply]
Support Jc86035 (talk) 11:47, 11 December 2020 (UTC)[reply]
Support Paucabot (talk) 12:14, 11 December 2020 (UTC)[reply]
Support Dhx1 (talk) 12:55, 11 December 2020 (UTC)[reply]
Support Watty62 (talk) 14:47, 11 December 2020 (UTC)[reply]
Support Izno (talk) 15:53, 11 December 2020 (UTC)[reply]
Support Husky (talk) 16:20, 11 December 2020 (UTC)[reply]
Support Poslovitch (talk) 16:46, 11 December 2020 (UTC)[reply]
Support Arnd (talk) 17:17, 11 December 2020 (UTC)[reply]
Support RobbieIanMorrison (talk) 19:20, 11 December 2020 (UTC)[reply]
Support Francois-Pier (talk) 09:43, 12 December 2020 (UTC)[reply]
Support Tom Ja (talk) 10:01, 12 December 2020 (UTC)[reply]
Support Klaas `Z4␟` V: 15:29, 12 December 2020 (UTC)[reply]
Support Jarekt (talk) 16:20, 12 December 2020 (UTC)[reply]
Support Yiyi (talk) 19:30, 12 December 2020 (UTC)[reply]
Support. Meiræ 21:59, 12 December 2020 (UTC)[reply]
Support Geagea (talk) 14:07, 13 December 2020 (UTC)[reply]
Support C. crispus ^(talk) 07:48, 14 December 2020 (UTC)
Support β₁₆ - (talk) 10:54, 15 December 2020 (UTC)[reply]
Support — Draceane ^talk_contrib. 13:56, 15 December 2020 (UTC)[reply]
Support TemboUngwe (talk) 15:26, 16 December 2020 (UTC)[reply]
Support Papuass (talk) 22:46, 16 December 2020 (UTC)[reply]
Support GiFontenelle (talk) 01:23, 18 December 2020 (UTC)[reply]
Support Astronommica (talk) 08:53, 19 December 2020 (UTC)[reply]
Support Reh man 03:01, 20 December 2020 (UTC)[reply]
Support Fringilla (talk) 20:04, 20 December 2020 (UTC)[reply]
Support Utopes (talk) 20:46, 20 December 2020 (UTC)[reply]
Support Shivanarayana (talk) 15:23, 21 December 2020 (UTC)[reply]