Template:Start date

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This template is used on approximately 385,000 pages, or roughly 17915% of all pages.
To avoid major disruption and server load, any changes should be tested in the template's /sandbox or /testcases subpages, or in your own user subpage. The tested changes can be added to this page in a single edit. Consider discussing changes on the talk page before implementing them.

This purpose of the {{start date}} template is to return the date (or date-time) that an event or entity started or was created, and to do so in a standard format. It also includes duplicate, machine-readable date (or date-time) in the ISO date format (which is hidden by CSS), for use inside other templates (or table rows) which emit microformats. It should be used only once in each such template and never used outside such templates. The hidden date degrades gracefully when CSS is not available.

When not to use this template

Do not use this template for:

dates that are uncertain e.g., "before 4 April 1933"; "around 18 November 1939".
dates outside the range given under "Limitation", below.
other, secondary dates
outside microformat-emitting templates - if in doubt, see the parent template's documentation
more than one date in any parent template
dates displayed using AM/PM format - this template only outputs 24-hour clocks

Syntax

{{start date|year|month|day}}
{{start date|year|month|day|HH|MM|SS|TimeZone}} (MM and SS are optional; TimeZone may be a numerical value, or "Z" for UTC; see examples)

Examples

{{start date|1993}} → "1993 (1993)"
{{start date|1993|02}} → "February 1993 (1993-02)"
{{start date|1993|02|24}} → "February 24, 1993 (1993-02-24)"
{{start date|1993|02|24|08|30}} → "08:30, February 24, 1993 (1993-02-24T08:30)"
{{start date|1993|02|24|08|||+01:00}} → "February 24, 1993 (+01:00) (1993-02-24T08+01:00)"
{{start date|1993|02|24|08|||-07:00}} → "February 24, 1993 (-07:00) (1993-02-24T08-07:00)"
{{start date|1993|02|24|08|30|23}} → "08:30:23, February 24, 1993 (1993-02-24T08:30:23)"
{{start date|1993|02|24|08|30|23|Z}} → "08:30:23, February 24, 1993 (UTC) (1993-02-24T08:30:23Z)"
{{start date|1993|02|24|08|30|23|+01:00}} → "08:30:23, February 24, 1993 (+01:00) (1993-02-24T08:30:23+01:00)"
{{start date|1993|02|24|08|30|23|-07:00}} → "08:30:23, February 24, 1993 (-07:00) (1993-02-24T08:30:23-07:00)"

An optional parameter, df, can be set to "y" or "yes" (or indeed any value) to display the day before the month. The order of parameters does not change (it remains YMD). This is primarily used in articles using DMY format for dates.

Examples

{{start date|1993|02|24|df=y}} → "24 February 1993 (1993-02-24)"
{{start date|1993|02|24|08|30|df=yes}} → "08:30, 24 February 1993 (1993-02-24T08:30)"

TemplateData

This is the TemplateData for this template used by TemplateWizard, VisualEditor and other tools. Click here to see a monthly parameter usage report for this template in articles based on this TemplateData.

TemplateData for Start date

<templatedata> { "description": "Date that an event or entity started or was created", "params": { "1": { "label": "YYYY", "description": "start year", "type": "number" }, "2": { "label": "MM", "description": "start month", "inherits": "1" }, "3": { "label": "DD", "description": "start day of month", "inherits": "1" }, "4": { "label": "HH", "description": "start hours", "inherits": "1" }, "5": { "label": "MM", "description": "start minutes", "inherits": "1", "default": "0" }, "6": { "label": "SS", "description": "start seconds", "inherits": "5" }, "7": { "label": "TZ", "description": "time zone offset, “+02:00”, “-06:00” or “Z” for UTC", "inherits": "1", "type": "string/line" }, "df": { "label": "day first", "description": "boolean parameter to put the day before the month name", "default": "false", "type": "string/line" }, "mf": { "label": "month first", "description": "mf=yes: order mm-dd-yyyy (=the default order)", "type": "string", "default": "yes", "deprecated": "trivial because default. Or use df=yes (for mf=no)." } } } </templatedata>

Use in microformats

This template also returns the date, hidden by CSS, in the ISO 8601 format needed by one or more of the following microformats:

hAtom (class="updated")
hAudio (class="published")
hCalendar (class="dtstart")
hCard (class="bday")

usually, but not always, within infobox or similar templates, or tables.

Its use in hCard is for organizations, venues and similar; use {{Birth date}} or {{Birth date and age}} for people.

Similarly, {{End date}} returns the date as hCalendar's (class="dtend").

See the microformats project for further details.

Limitation

This template has no provision to deal with a date in a non-Gregorian calendar. Also, ISO 8601 requires mutual agreement among those exchanging information before using years outside the range 1583–9999 CE. Therefore, use of this template for non-Gregorian dates or dates outside that range constitutes a false claim of conformance to the ISO 8601 standard.

Any editor encountering such usage should change the date to plain text with no template; or if not confident in doing so, raise the matter on this template's talk page.

Example

{{Start date|2016|12|31}} → December 31, 2016

December&nbsp;31,&nbsp;2016<span style="display:none">&#160;(<span class="bday dtstart published updated">2016-12-31</span>)</span>