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Manual on MediaWiki Extensions
List of MediaWiki Extensions
Calendar (Cdamian)

Release status: beta

Implementation  Tag
Description Use tags to create a calendar
Author(s)  Cdamiantalk
Last Version  1.13
MediaWiki  1.6.0 - 1.11.0
License No license specified

A few people have asked me for the calendar I use on

I couldn't release it earlier, because the CalendarClass I used didn't have a GPL friendly license (in fact, it didn't have any license and I wasn't able to contact the author). Now I have written my own primitive class and can release the whole thing under GPL.

It's just tested on and not tested in any other environment. Please use for testing. Not the main one!

You can find the code here:


  • a techno music wiki
  • The TV IV, the online compendium of television knowledge that anyone can edit.
  • A wiki for the St. Louis, Missouri community
  • wikEvent A wiki for collecting any and all public events, and publishing them using semantic markup, RDF, and any other standard that comes along.
  • WikiCU, a wiki about Columbia University

Readme File

check here:

Here is the setting for skipempty. It is confusing in the readme file.



  • 1.13
    • fix for mediawiki 1.7
  • 1.12
    • fix for '[[]]' display when merging and main calendar entry is empty
    • fix for including more than one calendar
    • simple ical format, which I use on
  • 1.11
    • two bugs fixed
  • 1.10
    • fixed weekformat=list
    • xml style parameters
  • 1.9
    • weekformat is in php classes now
  • 10.3.2006 version 1.8 (The Amador Release)
    • "weekformat" option for different layouts
    • "showempty" to supplress "add entry" msgs
    • localized calendar from user preferences
    • fix merge function to pass calendar name
  • 1.3.2006 version 1.7
    • released 1.7
    • another fix for the cache (thanks to Austin Che)
    • "skipempty" option
    • "rdays" reverse order of days
  • 17.11.2005 version 1.6
    • released 1.6
    • replaced <h3> in week display, to remove TOC in mediawiki 1.5
    • first go at merging calendars
    • add extension credits
  • 12.10.2005 version 1.5
    • fixed month display again
    • included some tests for CalendarClass using PHPUnit2
    • fix weeks not starting on monday
    • fix padding after month ending in end of the week
    • new DaysInMonth() and DayOfWeek() not using the php calendar extensions anymore
  • 4.10.2005
  • 29.9.2005
    • new option "weekstart" parameter is 1-7 for Monday-Sunday, default is 1 (Monday)
    • small fixes
  • 16.9.2005
    • new option "formattitle" for the titles in the week/day views
    • format & formattitle both accept php date() parameters now, prefixed with '%'. like this: "%d.%m.%Y".
  • 15.9.2005
    • enable double quoted options
    • "date" option, this takes a php strtotime string
    • disable cache for 1.5 (untested)
  • 6.9.2005 new view="days" with parameter days="#" to display a sequence of days; I also changed the view="today" option again
  • 6.9.2005 new view="today" option, by Dexter Samida
  • 29.8.2005 fixed the "format" option
  • 25.8.2005 new "day","month","year" options



  • It doesn't work for wiki-1.8.2 and cyrillic (ru,uk). Simply doesn't print anything.

Make sure you are not asking to show "weeks" and "skipempty". Select displaying a year first, and then work on the settings.

  • Does anyone have a problem with </dt> </dd> being displayed before and after the calendar today function?
  • Does anyone know how to add a calendar to the left navigation? I think this involves editing Monobook.php (my default skin), but I don't know how to get the calendar tag to render on load of the skin.
  • It would be great to have a way to add the entire calendar to my watchlist so I could be emailed when users add date pages. As it is, I can only use Related changes to see this manually.
  • I have customers that would like to be able to overlay other calendars into there calendars, someting to the effect of names=MyCalendar+Holidays+GroupEvents+HomeEvents
    • There is something like that in the current version, but only for week/days view. I don't know how it should work in the month view. And even in the week view, edits will go to the first calendar listed. --Cdamian 14:53, 1 March 2006 (UTC)
      • If there is something like that in the current version, how can I use it? What I would like to do is have a "master" calendar which has the items for all the other calendars. For example when I go to 10_26_2006 it will show the data from 10_26_2006/calendar2 and 10_26_2006/calendar3 (which is how I have it setup.) 07:10, 26 October 2006 (UTC)
  • I'd love to see a list of upcoming events for the next week/month/year, without the blank pages.
    • this is in the 1.7 version --Cdamian 14:53, 1 March 2006 (UTC)
  • it would be nice to have a way to flick forward/back like buttons on a wiki page in/decrementing a counter which is used to call the calendar the usual style (like:date= +$counter week). In this way a week by week overview can flick through a range of the year (good for planning ahead:-) 28 June 2006
  • It would be nice to have multi-language support for day- and monthnames. The preferred language could be detected by the $_SERVER['HTTP_ACCEPT_LANGUAGE'] variable. Generating day- and monthnames should work by using the setlocale() function. --DanielSimon 11:50, 29 October 2005 (UTC)
    • I don't want to use the HTTP_ACCEPT_LANGUAGE, but the user preferences instead. There is some code in mediawiki to format dates, but I don't think I can use that. --Cdamian 16:36, 3 November 2005 (UTC)
      • Why don't you use the strftime()-Function instead of the date()-function. This function should allow setlocale() to choose localized day-/monthnames... -- 09:14, 8 March 2006 (UTC)
    • there are tranlations now in the 1.8 release --Cdamian 11:33, 10 March 2006 (UTC)
  • This extension would be even more usefull when it offered the possibility of adding a title to dayevents like 6.4.2006_party. In that way the script could output a list of titles instead of only dates [1]]. Maybe it could also be done by taking each date-page and substracting the headings from it. (Under each heading would be an event.) The script could then output these headings ordered by date. This would make a list of events instead of a list of dates, which is much more informative. The list could be put into the sidebar, for example.
  • Hi - is 1.8 or 1.10 production? 1.10 has a missing ) on line 94 (isset($params[$i]) should be (isset($params[$i])) - I'm about to upgrade to 1.6.3 and wanted to upgrade wikicalendar in the process.
    • sorry about 1.10, that was my mistake. I have uploaded 1.11 now, which fixes that bug and another one --Cdamian 09:34, 18 April 2006 (UTC)



Template:TalkFromMeta In Calendar.php, the disabling of the 1.5 cache doesn't work...I think it's because it's not doing a return ""; at the very end. Don't know how you want to accept contributions for the code...I also hacked in a sloppy monthly calendar with each event listed in the cell for the day.

strange thing about the cache. best thing for contributions is to send them to me ( ), I'll answer much faster than too. --Cdamian 16:34, 3 November 2005 (UTC)
there is a new fix for the cache in version 1.7 now, please have another go --Cdamian 14:52, 1 March 2006 (UTC)
I am still having problems with caching in version 1.11 Nobody had edited any calendar entries for over a month, I went to check the calendar and it still was showing the date I last looked at (about 7/4) for my month, week, and year calendars. Even when I held shift and hit the reload button in firefox I kept getting the old one. I edited the calendar php files to add some debug messages and sure enough it showed the proper date. I did just upgrade to firefox from a 1.0 version...not sure if this has something to do with it. --Ej Wed Aug 16 11:00:00 EDT 2006
Very strangely, I'm seeing 29 october twice, causeing my calendar to go totally nuts. Anything sensible I can do about that? This also happens after an upgrade to 1.13. Apart from that, I totally love your calendar plugin :-) --RubenV 19:21, 3 November 2006 (UTC)