for (const [start, end] of inViewportAndBoundaries) {
      const cell = document.createElement('div');
      cell.classList.add(timelineElementCssClass, timelineGridElementCssClass);
      cell.style.left = calculatePositionValueForDayCount(vp, start.diff(startView, 'days'));
      cell.style.width = calculatePositionValueForDayCount(vp, end.diff(start, 'days') + 1);