foundryvtt-reve-de-dragon/templates/calendar-editor-template.html

<form class="rdd-dialog-calendar-editor" autocomplete="off">
  <header class="sheet-header">
      <div class="header-fields">
          <h1 class="charname">Edition du Calendrier</h1>
      </div>
  </header>
  
  {{!-- Sheet Body --}}
  <section class="sheet-body">
    <div class="form-group">
      {{>"systems/foundryvtt-reve-de-dragon/templates/common/timestamp.hbs" 
        (timestamp-extract timestamp)
          path='calendar'
          label='Date courante'
          disabled=''
      }}
    </div>
  </section>
</form>