Template:Calendar date - Simple English Wikipedia, the free encyclopedia

File:Test Template Info-Icon - Version (2).svg Template documentation[view] [edit] [history] [purge]

This template uses Lua:

Module:Calendar date

{{Calendar date}} aka {{Moveable date}} is for displaying the calendar date of holidays or events that move annually, that do not have a fixed day and month of occurrence.

Examples include the Jewish new year Hanukkah which is based on a non-Gregorian calendar system. The June solstice wobbles celestially.

Usage[change]

The template requires only two arguments, the holiday/event name (|holiday= or |event= are synonymous) and the year |year=.

Example:

{{calendar date |holiday=Rosh Hashanah |year=2019}}

Produces:

Sunset, 29 September 2019 – nightfall, 1 October 2019

Optionally try |format=infobox in an infobox

Example:

{{Calendar date |holiday=Rosh Hashanah |year=2019 |format=infobox}}

Produces:

Sunset, 29 September –
nightfall, 1 October

Options[change]

Required

holiday or event: Name of an available holiday. Ex. |holiday=Rosh Hashanah or |event=Rosh Hashanah
year: Year of event. Ex. |year=2019

Options

df: Date Format options can be "dmy", "mdy" or "iso" (|df=dmy). Defaults are set in Module:Calendar date/Events
format: Use |format=infobox in an infobox
cite: If set to anything (|cite=) a citation is added.

Adding or editing holidays[change]

Holidays are configured in Module:Calendar date/Events which has additional documentation and examples.

There are two holiday types: "calculator" and "localfile".

calculator - Moveable dates are determined with a calculator plugin. For example Rosh Hashanah uses the {{Hebrew year}} calculator:

datatype = "calculator"

datasource = "{{#time:Y-m-d|@{{Hebrew year/rhdatum|{{#timel:xjY|YYYY-11-1}}}}-1 days}}"

When the template runs, it replaces "YYYY" with the value of the |year= argument, then executes the datasource code. Calculators can be any available on Wikipedia, so long as it accepts a year value and returns a date in ISO format. All calculators are third-party plugins, the template does not do calculations.

localfile - When a calculator is not possible or unavailable, moveable dates can be stored in local files. For example with Tu BiShvat:

datatype = "localfile"

datasource = "Module:Calendar date/localfiles/Tu BiShvat"

The file Module:Calendar date/localfiles/Tu BiShvat contains a static list of dates.

wikidata - <to be developed - see talk page for more info>

Holidays with multiple aliases[change]

If a holiday has multiple aliases, and it's desired the template support them with the |holiday= argument, create multiple entries in Module:Calendar date/Events one for each name.

Dynamic dates[change]

The |year= can accept templates.

For example, to show the current year for Tu BiShvat use {{CURRENTYEAR}}:

{{Moveable date |holiday=Tu BiShvat |year={{CURRENTYEAR}}}}

Produces

Sunset, 13 February 2025 – nightfall, 14 February 2025

Other useful templates are {{LASTYEAR}} and {{NEXTYEAR}}.

Combined they can be used in infoboxes to fully automate updates, example from the Hanukkah infobox:

|date{{LASTYEAR}} = {{Moveable date |holiday=Hanukkah |year={{LASTYEAR}} |format=infobox |cite=}}

|date{{CURRENTYEAR}} = {{Moveable date |holiday=Hanukkah |year={{CURRENTYEAR}} |format=infobox}}

|date{{NEXTYEAR}} = {{Moveable date |holiday=Hanukkah |year={{NEXTYEAR}} |format=infobox}}

|date{{NEXTYEAR|2}} = {{Moveable date |holiday=Hanukkah |year={{NEXTYEAR|2}} |format=infobox}}

Tracking categories[change]

Category:Calendar date template errors

VisualEditor TemplateData[change]

What is this? See https://www.mediawiki.org/wiki/Help:TemplateData

<templatedata> {

   "description": "A template for displaying moving calendar dates",
   "params": {
       "holiday": {
           "label": "Name of holiday/event",
           "description": "The name of the holiday or event",
           "type": "string",
           "example": "Rosh Hashana",
           "required": true
       },
       "year": {
           "label": "Holiday year",
           "description": "The year to display the holiday dates for",
           "type": "string",
           "example": "2019",
           "required": true
       },
       "format": {
           "label": "Display format option",
           "description": "Options for controlling display output such as for an infobox",
           "type": "string",
           "suggested": false,
           "example": "infobox",
           "default": "none"
       },
       "df": {
           "label": "Date Format",
           "description": "Date format to use when displaying dates",
           "type": "string",
           "suggested": false,
           "example": "mdy",
           "default": "dmy"
       }
   }

} </templatedata>

External links[change]

Simple holidays by Mark Seemann

The documentation on top is transcluded from Template:Calendar date/doc. (edit | history)
Editors can experiment in this template's sandbox (create | mirror) and testcases (create) pages.
Add categories to the /doc subpage. Subpages of this template.