Moment calendar without time plugin

moment.calendarWithoutTime.js

(function(){
  var oldcal = moment.calendar;
  var newcal = {
    sameDay : '[Today]',
    nextDay : '[Tomorrow]',
    nextWeek : 'dddd',
    lastDay : '[Yesterday]',
    lastWeek : '[last] dddd',
    sameElse : 'L'
  };

  moment.fn.oldcalendar = moment.fn.calendar;
  
  moment.fn.calendar = function(withoutTime) {
    if (withoutTime) {
      moment.calendar = newcal;
    } else {
      moment.calendar = oldcal;
    }
    return this.oldcalendar();
  }

})()

Also
moment().calendar().substring(0, moment().calendar().indexOf(' at'))
More verbose, but doesn't create an unnecessary array

this approach doesn't work and return empty string "", if moment doesn't contain " at" this is all "sameElse" dates.

default:
moment().calendar(null, {
sameDay: '[Today]',
nextDay: '[Tomorrow]',
nextWeek: 'dddd',
lastDay: '[Yesterday]',
lastWeek: '[Last] dddd',
sameElse: 'DD/MM/YYYY'
});

+1 to the
(moment(time).calendar().split(" at"))[0]

thanks