skouliki wrote:hello 

You can read this tutorial https://help.forumotion.com/t1449-the calendar

you can use our new system that is way better and faster https://help.forumotion.com/t153199-new-functionality-the-events

skouliki wrote:can you provide please your forum url ? iam not quite sure if that is possible
maybe by modifying the calendar template

Code:

$(function(){
  var days_hash = {
    "Sunday":    "SUN",
    "Monday":    "MON",
    "Tuesday":  "TUES",
    "Wednesday": "WED",
    "Thursday":  "THURS",
    "Friday":    "FRI",
    "Saturday":  "SAT"
  };
  $('table.forumline th').filter(function(){
    var e = $(this), d;
    for (d in days_hash) {
      e.html(e.html().replace(d, days_hash[d]));
    }
  });
});

Wecoc wrote:You should provide a link to the calendar on your forum and say which names you want to change exactly, bacause there are many options. Also it's different if you are referring to the calendar widget, the calendar main page or the calendar schedule.

Anyway what you ask can be done with javascript, filtering the elements and changing the names in their 'html' property directly.
Here I tested this one in a PHPBB2 forum to change this names:

Code:

$(function(){
  var days_hash = {
    "Sunday":    "SUN",
    "Monday":    "MON",
    "Tuesday":  "TUES",
    "Wednesday": "WED",
    "Thursday":  "THURS",
    "Friday":    "FRI",
    "Saturday":  "SAT"
  };
  $('table.forumline th').filter(function(){
    var e = $(this), d;
    for (d in days_hash) {
      e.html(e.html().replace(d, days_hash[d]));
    }
  });
});

rules wrote: Please provide your forum URL for appearance problems.

I would like it changed for the calendar widget, the calendar main page and the calendar schedule. Basically anywhere it would display.

Wecoc wrote:

I would like it changed for the calendar widget, the calendar main page and the calendar schedule. Basically anywhere it would display.

Everywhere calendar would display, or everywhere dates would display?

Well, it's not recommended to edit it everywhere, should be better to do it case by case.
That way will take less time to process and will avoid problems between full names and abbreviations, or in post contents.
I know dates are displayed many times along the forum but still I would priorizate that.

It's tricky to do, so you should think how much you really need this. Will be easier if it's only in the calendars, of course.
If you want go on with that, search every part where that should be replaced and provide a link in every case (only the forum's main link for widgets).
I understand you don't want to share your forum link here but you should be able to remove it when this is solved anyway, in case this helps...

Code:

$(function(){
  var body = document.querySelector('body'), text = body.innerHTML;
  text = text.replace(/\bMonday\b/gm, "MON");
  body.innerHTML = text;
});

Code:

text = text.replace(/\bMonday\b/gm, "MON");
text = text.replace(/\bTuesday\b/gm, "TUES");
text = text.replace(/\bWednesday\b/gm, "WED");
(...)

Code:

text = text.replace(/\bJanuary\b/gm, "JAN");
text = text.replace(/\bFebruary\b/gm, "FEB");
text = text.replace(/\bMarch\b/gm, "MAR");