 | This template is used on approximately 38,000 pages and changes may be widely noticed. Test changes in the template's /sandbox or /testcases subpages, or in your own user subpage. Consider discussing changes on the talk page before implementing them. |
 | Please check that you do actually need this template before using it. Default date sorting does not work for spelled-out month–year or year–month combos and dates before the year 100, but it works in most other circumstances. For more information, see Help:Sorting § Date sorting problems. |
 | This template should not be used in citation templates such as Citation Style 1 and Citation Style 2, because it includes markup that will pollute the COinS metadata they produce; see Wikipedia:COinS. |
 | This template uses Lua: |
Date table sorting is used to correctly sort and display dates in a sortable table (see Help:Sorting).
What it solves
Dates in their customary formats, if simply treated as alphanumeric text strings, sort in nonsensical ways:
- 1 September 1998 sorts alphanumerically before 5 March 1967, because 1 is less than 5;
- February 5, 1922 sorts alphanumerically before January 3, 1922, because F comes before J.
Use of the YYYY-MM-DD format would solve this problem, but with minor exceptions that format is not used in articles (see WP:DATEFORMAT).
This template automatically attaches a "hidden key" to dates, causing them to sort correctly while still being displayed in one of the customary display formats such as February 5, 1922, or 5 Feb 1922.
Parameters
Dates
| ((Date table sorting|year|month|day|BC)) | ((Date table sorting|date)) |
|---|---|
|
|
| input style | input code | hidden sort key | visible output |
|---|---|---|---|
| ((Date table sorting|year)) | ((Date table sorting|1893))
|
1893 | |
((Date table sorting|-89))
|
89 BC | ||
((Date table sorting|-10000))
|
10,000 BC | ||
((Date table sorting|-1))
|
1 BC | ||
((Date table sorting| 1))
|
1 (Note that year 0 does not exist and gives error message) | ||
| ((Date table sorting|month)) | ((Date table sorting|Oct))
|
Oct | |
| ((Date table sorting|month year)) | ((Date table sorting|February 1767))
|
February 1767 | |
| ((Date table sorting|day month year)) | ((Date table sorting|12 Aug 1987))
|
12 Aug 1987 | |
| ((Date table sorting|month day, year)) | ((Date table sorting|July 1, 1867))
|
July 1, 1867 | |
| ((Date table sorting|day month)) | ((Date table sorting|25 October))
|
25 October | |
| ((Date table sorting|month day)) | ((Date table sorting|Jan 1))
|
Jan 1 | |
| ((Date table sorting|YYYY-MM-DD)) | ((Date table sorting|2014-12-09))
|
December 9, 2014 | |
| ((Date table sorting|DD-MM-YYYY)) | ((Date table sorting|15-05-2019))
|
15 May 2019 | |
| ((Date table sorting|year|month)) | ((Date table sorting|1990|10))
|
October 1990 | |
((Date table sorting|1980|Dec))
|
Dec 1980 | ||
((Date table sorting|1970|August))
|
August 1970 | ||
| ((Date table sorting|year|month|day)) | ((Date table sorting|2024|Jun|12))
|
Jun 12, 2024 | |
((Date table sorting|-204|11|22))
|
November 22, 204 BC | ||
| ((Date table sorting|year|month|day|era)) | ((Date table sorting|44|3|15|BC))
|
March 15, 44 BC | |
((Date table sorting|94|Oct|17|AD))
|
Oct 17, 94 | ||
| ((Date table sorting|month)) | ((Date table sorting||May))
|
May | |
| ((Date table sorting|month|day)) | ((Date table sorting||Sep|12))
|
Sep 12 |
Formatting
Using format produces a format that depends on, but is not necessarily equal to the format of the supplied date. The format parameter can take nine values.
| value | function | input code | hidden sort key | visible output |
|---|---|---|---|---|
| format depends on the input | ((Date table sorting|26 Jan 1788))
|
26 Jan 1788 | ||
((Date table sorting|March 12, 1557))
|
March 12, 1557 | |||
((Date table sorting|1975-02-13))
|
February 13, 1975 | |||
dmy |
displays the date in day-month-year format | ((Date table sorting|Sep 13, 1888|format=dmy))
|
13 Sep 1888 | |
((Date table sorting|1983-01-03|format=dmy))
|
3 January 1983 | |||
dm |
displays only the day and month in day-month format | ((Date table sorting|Feb 26, 1788|format=dm))
|
26 Feb | |
((Date table sorting|2020-10-15|format=dm))
|
15 October | |||
mdy |
displays the date in month-day-year format | ((Date table sorting|August 31, 1901|format=mdy))
|
August 31, 1901 | |
((Date table sorting|2006-11-08|format=mdy))
|
November 8, 2006 | |||
md |
displays only the day and month in month-day format | ((Date table sorting|26 Jun 1988|format=md))
|
Jun 26 | |
((Date table sorting|2002-02-27|format=md))
|
February 27 | |||
my |
displays only the month and year in month-year format | ((Date table sorting|16 November 1488|format=my))
|
November 1488 | |
d |
displays only the day | ((Date table sorting|6 July 1666|format=d))
|
6 | |
m |
displays only the month | ((Date table sorting|1980-02-12|format=m))
|
February | |
y |
displays only the year | ((Date table sorting|-26|Jan|18|format=y))
|
26 BC | |
hide |
hides the date | ((Date table sorting|15 October 1800|format=hide))
|
Abbreviation
There are two ways of abbreviating the month name.
- Directly input an abbreviated month name.
- Use the
abbr=onparameter. It can be placed before or after the date in the template. This allows one to abbreviate the month later if the table becomes too wide. It is easy to use find-and-replace in a text editor, or the wikitext editor, to replace((Date table sorting|with((Date table sorting|abbr=on|
| abbreviation method | input code | hidden sort key | visible output |
|---|---|---|---|
| none | ((Date table sorting|2000-01-01))
|
January 1, 2000 | |
((Date table sorting|2000|1|1))
|
January 1, 2000 | ||
((Date table sorting|1 January 2000))
|
1 January 2000 | ||
((Date table sorting|2000|January|1))
|
January 1, 2000 | ||
| abbreviated input | ((Date table sorting|1 Jan 2000))
|
1 Jan 2000 | |
((Date table sorting|2000|Jan|1))
|
Jan 1, 2000 | ||
abbr=on |
((Date table sorting|1 January 2000|abbr=on))
|
1 Jan 2000 | |
((Date table sorting|2000|January|1|abbr=on))
|
Jan 1, 2000 | ||
((Date table sorting|2000-01-01|abbr=on))
|
Jan 1, 2000 | ||
((Date table sorting|2000|1|1|abbr=on))
|
Jan 1, 2000 |
Additional sort key
In case two dates in a table are identical they may be ordered using the addkey parameter.
| input code | hidden sort key | visible output |
|---|---|---|
((Date table sorting|2010-10-10|addkey=3))
|
October 10, 2010 | |
((Date table sorting|2010-10-09))
|
October 9, 2010 | |
((Date table sorting|2010-10-10|addkey=1))
|
October 10, 2010 | |
((Date table sorting|2010-10-10))
|
October 10, 2010 | |
((Date table sorting|2010-10-10|addkey=4))
|
October 10, 2010 | |
((Date table sorting|2010-10-11))
|
October 11, 2010 | |
((Date table sorting|2010-10-10|addkey=2))
|
October 10, 2010 |
Wrapping
To turn off the suppression of word wraps, use the nowrap=off parameter.
TemplateData
Date table sorting is used to correctly sort and display dates in a sortable table.
| Parameter | Description | Type | Status | |
|---|---|---|---|---|
| Full date or year | 1 | Full date if second to fourth parameters are not specfied, otherwise year. Full date can be either in "YYYY-MM-DD", "DD-MM-YYYY", "DD Month YYYY", "Month DD, YYYY", "YYYY-MM", "DD Month", "Month DD", "Month YYYY" or "Month" format. Year is either a positive number or a negative number. If fourth parameter is not specified negative numbers are interpreted as years of BC era. Parameter is optional if the second parameter is specified.
| String | required |
| Month | 2 | Full or abbreviated month name or alternatively, a month number which can be zero-padded. Parameter is optional if the third parameter is not specified.
| String | optional |
| Day | 3 | Day, optionally zero-padded
| Number | optional |
| Era | 4 | BC, AD, BCE or CE. Takes effect only if the first parameter is a positive number. | String | optional |
| Format | format | Controls the output format. Can be "dmy", "dm", "mdy", "md", "my", "d", "m", "y" or "hide". | String | optional |
| Abbreviation | abbr | Abbreviates the month name
| String | optional |
| Additional sort key | addkey | Adds another sort key to resolve conflicts between rows with the same date
| Number | optional |
| Wrapping | nowrap | To turn off the suppression of word wraps, use the "off" parameter
| Boolean | optional |
Notes
Sorting for incomplete dates
- Whole months or years
- A whole year or month (and year) is sorted according to its first day.
- Missing years
- If the year is not specified, the date will be sorted as if the year were the current year.
- Blank dates
- For no date input at all, the maximum possible sort key is used, so the entry will sort last.
Error handling
Errors are tracked in Category:Date table sorting templates with errors.
Calendar choice
The template is not capable of distinguishing Julian and Gregorian calendar dates. Also, it is not capable of taking a date in one calendar as input and outputting a date in the other calendar. Thus, to insure proper sorting, editors must either use one calendar for all dates, or pick a specific changeover date (for example, deciding that 4 October 1582 is Julian and all later dates are Gregorian); this would be done on an article-by article basis. Editors are also responsible for explaining to the reader whether the visible dates are Julian or Gregorian, if there is any possibility of confusion.
Linking
The template formerly linked dates automatically, with link=off used to suppress linking. In accordance with current guidelines, linking of dates is no longer supported and instances of link=off should be removed.
See also
- ((sort)), sorting by a specified key (also good for complicated numbers, e.g. scientific notation)
- ((sortname)), full name sorting (using "last name, first name" as default sort key)
- ((tts)), for sorting times in result tables of athletic events (only needed in certain cases - see template documentation)
- ((Number table sorting)), for numbers